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Effects of manufacturing modality, primer, and adhesive polymerization on the shear bond strength of customized lingual brackets to glazed zirconia: An <i>in vitro</i> study

by Viet Anh Nguyen, Ngo The Minh Pham, Minh Ngoc Tran, Thi Bich Ngoc Ha, Thi Quynh Trang Vuong

Introduction

Bonding fixed appliances to zirconia restorations is challenging, yet adult orthodontics increasingly involves ceramic crowns and patient-driven esthetic choices such as lingual appliances. Customized lingual brackets may improve fit and reduce adhesive thickness, but evidence on their bonding to zirconia is limited.

Materials and methods

This in vitro study evaluated the shear bond strength of customized lingual brackets bonded to glazed zirconia after airborne-particle abrasion. Bracket manufacturing was either three-dimensionally (3D) printed cobalt-chromium or cast nickel-chromium. Primers were a universal adhesive (Single Bond Universal, 3M) or a primer containing 10-methacryloyloxydecyl dihydrogen phosphate Z-Prime Plus (Bisco), and adhesives were a light-cure orthodontic composite or a dual-cure resin cement. One hundred twenty-eight specimens (n = 16 per group) were tested. Shear bond strength was analyzed with three-way ANOVA, followed by post-hoc Tukey tests. Adhesive Remnant Index (ARI) scores were evaluated with ordinal regression. Significance was set at α = 0.05.

Results

Manufacturing modality significantly affected bond strength, with additively manufactured cobalt-chromium exceeding cast nickel-chromium (P = 0.049). The primer category and polymerization mode showed no significant main effects (P > 0.20) and no significant interactions. Group means clustered 9–10 MPa, and all combinations met the clinically accepted threshold. Additively manufactured brackets exhibited lower ARI scores than cast brackets (P  Conclusions

On glazed, sandblasted zirconia, shear bond strength of customized lingual brackets showed a borderline main effect of fabrication method, whereas primer type and adhesive polymerization mode were not statistically significant. Failures were predominantly located at or near the zirconia–adhesive interface. Within this in vitro model, base manufacturing may warrant attention, whereas primer and curing mode may be selected for handling and workflow considerations, with clinical relevance yet to be established.

Attitudes towards addressing environmental sustainability in patient-provider interactions: a qualitative study among Dutch physicians

Por: Cohen · E. S. · Grandiek · F. · Kringos · D. S. · Kouwenberg · L. H. J. A. · Sperna Weiland · N. H. · Richie · C. · Aarts · J. W. M. · Hehenkamp · W. J. K.
Objectives

To investigate the attitudes of physicians towards addressing environmental sustainability in patient conversations, and to identify barriers and facilitators to doing so.

Design

A qualitative, nation-wide study was conducted using semi-structured online focus groups and interviews. Reflexive thematic analysis was used to analyse transcripts, guided by the Theoretical Domains Framework.

Setting

Secondary and tertiary healthcare institutions in the Netherlands.

Participants

Participants were medical specialists and residents in obstetrics and gynaecology (OB-GYN physicians) in the Netherlands. Participants were purposefully identified to capture diverse demographics and practice settings.

Primary and secondary outcome measures

Physicians’ attitudes towards discussing the environmental impact of healthcare and the health effects of environmental pollution with patients. Themes were identified and categorised using the Theoretical Domains Framework.

Results

The study included 28 OB-GYN physicians working across 23 healthcare institutions in the Netherlands. Six themes were developed: (1) strong sense of urgency to reduce healthcare's environmental impact, (2) knowledge gaps impair communication about environmental impact to patients, (3) prioritisation of individual patient health over environmental concerns in decision-making, (4) perceived lack of patient interest in environmental outcomes, (5) system-level support facilitates discussions about environmental sustainability with patients and (6) limited perceived value in discussing the health effects of environmental pollution and climate change with patients.

Conclusions

OB-GYN physicians are supportive of discussing the environmental impact of healthcare services when clinically appropriate. Addressing knowledge gaps, providing evidence-based guidance and embedding sustainability into clinical guidelines and decision aids may facilitate the integration of environmental sustainability into patient-provider interactions.

How do musculoskeletal disorders impact on quality of life in Tanzania? Results from a community-based survey

Por: Grieve · E. · Deidda · M. · Krauth · S. J. · Biswaro · S. M. · Halliday · J. E. B. · Hsieh · P.-H. · Kelly · C. · Kilonzo · K. · Kiula · K. P. · Kolimba · R. · Msoka · E. F. · Siebert · S. · Walker · R. · Yongolo · N. M. · Mmbaga · B. · McIntosh · E. · NIHR Global Health Group · Biswaro
Objectives

There are little available data on the prevalence, economic and quality of life impacts of musculoskeletal disorders in sub-Saharan Africa. This lack of evidence is wholly disproportionate to the significant disability burden of musculoskeletal disorders as reported in high-income countries. Our research aimed to undertake an adequately powered study to identify, measure and value the health impact of musculoskeletal conditions in the Kilimanjaro region, Tanzania.

Design

A community-based cross-sectional survey was undertaken between January 2021 and September 2021. A two-stage cluster sampling with replacement and probability proportional to size was used to select a representative sample of the population.

Setting

The survey was conducted in 15 villages in the Hai District, Kilimanjaro region, Tanzania.

Participants

Economic and health-related quality of life (HRQOL) questionnaires were administered to a sample of residents (aged over 5 years old) in selected households (N=1050). There were a total of 594 respondents, of whom 153 had a confirmed musculoskeletal disorder and 441 matched controls. Almost three-quarters of those identified as having a musculoskeletal disorder were female and had an average age of 66 years.

Primary and secondary outcome measures

Questions on healthcare resource use, expenditure and quality of life were administered to all participants, with additional more detailed economic and quality of life questions administered to those who screened positive, indicating probable arthritis.

Results

There is a statistically significant reduction in HRQOL, on average 25% from a utility score of 0.862 (0.837, 0.886) to 0.636 (0.580, 0.692) for those identified as having a musculoskeletal disorder compared with those without. The attributes ‘pain’ and ‘discomfort’ were the major contributors to this reduction in HRQOL.

Conclusions

This research has revealed a significant impact of musculoskeletal conditions on HRQOL in the Hai district in Tanzania. The evidence will be used to guide clinical health practices, interventions design, service provisions and health promotion and awareness activities at institutional, regional and national levels.

Development of a low-cost culture medium from industrial and environmental by-products for sustainable cultivation of Lactic Acid Bacteria

by Michele Letitia Tchabou Tientcheu, Pierre Marie Kaktcham, Edith Marius Foko Kouam, Laverdure Tchamani Piame, Lysette Chabrone Djodjeu Kamega, Aarzoo , Agnihotri Shekhar, Singh Bhim Pratap, François Zambou Ngoufack

Conventional culture media such as de Man, Rogosa and Sharpe are essential for the growth of lactic acid bacteria and the production of metabolites used in the food and pharmaceutical industries. However, their high cost limits their application, particularly in low and middle-income countries. This study aimed to develop a cost-effective and efficient culture medium based on agro-industrial and environmental by-products, pineapple peels, sugarcane molasses, and black soldier fly larvae cake. After physico-chemical analysis of the by-products, excluding sugarcane molasses, a statistical mixture design was used to determine the optimal proportions for supporting lactic acid bacteria growth and bacteriocin production. Growth and metabolite production were monitored via plate count and agar well diffusion assays respectively. The strains tested belonged to the genera Lactobacillus, Bifidobacterium, Streptococcus, Lactococcus, and Bacillus as an out taxa group. The larvae cake showed high protein (48.47 ± 0.14%) and amino acid (17 types) content, while pineapple peels and molasses were rich in carbohydrates (89.52 ± 0.16% and 86.86 ± 0.07%). Based on regression models, the compromise formulation was defined as 55.15% larvae cake hydrolysate, 19.85% pineapple peel hydrolysate, and 25.00% sugarcane molasses. This medium highly supported lactic acid bacteria growth (9.43–9.86 log CFU/mL) compared to MRS and M17 (9.20–9.69 log CFU/mL), with Lactobacillus strains performing better. It also supported bacteriocin activity (11.0–14.5 mm inhibition zones), higher or similar to MRS and M17, with Lactococcus lactis subsp. lactis MA2 exhibiting the strongest effect. These results highlight the potential of this formulation as a sustainable, low-cost alternative for microbiology and biotechnology, particularly in resource-limited settings. The determination of its formula will allow its manufacture once the proximate compositions of the ingredients are known, regardless their origin. Future investigations will focus on optimisation of culture conditions, powder form formulation, and cost evaluation.

Validation of an instrument to assess knowledge, attitudes, and practices regarding occupational accident prevention among rice farmers

by My Ha Nguyen, Toan Van Ngo, Linh Gia Vu, Dat Cong Truong, Hai Minh Vu

Background

Despite the hazardous nature of rice farming, limited evidence exists regarding farmers’ knowledge, attitudes, and practices (KAP) toward accident prevention, and no standardized instrument is currently available to measure these dimensions in Vietnam or comparable contexts. This study aimed to develop and validate a psychometrically sound instrument for assessing rice farmers’ KAP related to occupational accident prevention.

Methods

Instrument development and validation were carried out in three stages. First, an initial item pool was generated through an extensive review of existing literature. Second, content validity was established through expert consultation involving professionals in agriculture, occupational health, and public health. Third, a pilot study was conducted with 168 rice farmers in Thai Binh Province, Vietnam, to evaluate the instrument’s psychometric properties.

Results

Exploratory factor analysis identified 20 items across five factors in the knowledge domain, nine items forming a single factor for attitudes, and 17 items grouped into four factors for practices, explaining 85.8%, 43.8%, and 72.3% of the total variance, respectively. Confirmatory factor analysis supported these structures, demonstrating satisfactory model fit across domains. The instrument exhibited high internal consistency, with Cronbach’s alpha values ranging from 0.894 to 0.969 for knowledge, 0.833 for attitudes, and 0.805 to 0.933 for practices.

Conclusion

The validated instrument provides a reliable and valid measure of rice farmers’ knowledge, attitudes, and practices concerning occupational accident prevention. It offers a robust foundation for future research, monitoring, and targeted interventions aimed at improving safety behaviors and reducing injury risks among agricultural workers.

Knowledge, attitudes, and barriers to HIV testing among youth in Kumba, Cameroon: A cross-sectional qualitative community-based focus group study

by Frederick Nchang Cho, Marie Clarie Fien Ndim, Diane Zinkeng Tongwa, Christabel Afor Tatah, Franklin Ngwesse Ngome, Eugine Mbuh Nyanjoh, Andrew N Tassang

Background

Human Immunodeficiency Virus (HIV) remains a major public health concern in sub-Saharan Africa. In Cameroon, young people are disproportionately affected but underrepresented in HIV testing statistics.

Objective

To explore knowledge, attitudes, and behaviours related to HIV testing among youth in Kumba, Cameroon, and to identify barriers to inform community-based interventions.

Methods

A cross-sectional qualitative study was conducted using nine focus group discussions (FGDs) with 75 youth (52 females and 23 males) aged 18 - 35 years across four quarters in the Kumba II municipality. Participants were purposively sampled to reflect diverse educational and occupational backgrounds. Data were thematically analysed using Braun and Clarke’s framework with NVivo Version 14.

Results

Participants demonstrated high awareness of HIV testing services (90.7%) and transmission via sexual contact (96.0%), though knowledge gaps remained regarding non-sexual transmission and testing procedures. While 93.3% had previously undergone HIV testing, 57.3% reported stigma and 46.7% raised confidentiality concerns as ongoing barriers. Female participants feared being labelled as promiscuous, while males cited social norms that discourage help-seeking. Most participants supported school-based or youth-centred community testing, emphasising the need for privacy and youth-friendly environments. Key motivators for testing included the desire to know one’s status (82.7%), symptom appearance (28.0%), and unprotected sex (17.3%).

Conclusions

Despite strong awareness and high testing uptake, stigma and confidentiality concerns persist among youth in Kumba. To enhance HIV testing rates, community-based strategies should prioritise mobile clinics, peer outreach, and confidential youth-centred services. Strengthening education about HIV transmission and demystifying the testing process may further reduce barriers.

Burden of sickle cell anemia in Africa: A systematic review and meta-analysis

by Bwambale Jonani, Emmanuel Charles Kasule, Bwire Roman Herman, Joel Fredrick Arturo, Mwesigwa Calvin Mugambwa, Ssebulime Stephen, John Bosco Mundaka, Richard Kwizera, Gerald Mboowa, Felix Bongomin

Introduction

Sickle Cell Anemia (SCA) is a significant genetic disorder in Africa; however, comprehensive data on its prevalence and geographic distribution remain limited. We aimed to estimate the pooled prevalence of SCA (HbSS) in African populations and examine regional, demographic, and temporal variations from 1994–2024.

Methods

We systematically searched PubMed, Scopus, Google Scholar, and BASE databases for studies reporting SCA prevalence in African populations. Screening and quality assessments were performed using JBI tools. A random-effects meta-analysis with logit transformation was performed, with subgroup analyses by region, age, sex, and study design. Meta-regression explored heterogeneity sources, including geographic region, age category, diagnostic method, study design, and publication year.

Results

From 115 studies with 1,203,839 participants and 17,458 confirmed HbSS cases, the pooled prevalence was 1.43% (95% CI: 1.08%–1.88%), with substantial heterogeneity (I2 = 99.1%) and a prediction interval of 0.21%–8.91%. Central Africa showed the highest prevalence (1.99%), and Southern Africa showed the lowest (0.59%). Children exhibited a higher prevalence (1.65%) than adults (0.45%), while sex differences were non-significant (males 2.71%, females 1.74%; p = 0.694). The prevalence has remained stable over three decades despite a six-fold increase in research output, although wide prediction intervals indicated substantial between-study variability. Electrophoretic techniques predominated (86.4% of cases). Diagnostic method (χ² = 16.73, p = 0.033) and age category (χ² = 33.66, p 2 = 98.6%). Leave-one-out sensitivity analysis showed that no single study significantly impacted the pooled estimates.

Conclusion

SCA represents a substantial and geographically variable public health challenge across Africa. These findings highlight the need for region-specific interventions, expanded newborn screening programs, improved diagnostic accessibility with quality assurance for point-of-care technologies, and continued surveillance to address geographic gaps.

Research on the impact of User-Generated Content (UGC) in shaping the purchase behavior of environmentally friendly products and the moderatings role of brand reputation

by Tu Ngoc Tran, Nguyen Phan Thu Hang

This paper aims to explore the effect of User-Generated Content (UGC) on the purchasing behavior of environmentally friendly products at Hospitality and Food Service Industry in Vietnam, particularly in Ho Chi Minh City. A conceptual model has been developed based on literature reviews and empirical studies. Furthermore, the Partial Least Squares Structural Equation Modeling (PLS-SEM) method was employed to investigate the impact of UGC on the purchasing behavior of environmentally friendly products at Hospitality and Food Service Industry in Vietnam. The results confirm that environmental concerns, attitudes, and the intention to purchase green products are all positively and significantly influenced by UGC. Especially, the results validate that brand reputation plays a moderating role in the connections between UGC and environmental concern, UGC and environmental attitude, as well as the relationship between the intention to purchase environmentally friendly products and actual purchasing behavior.

Factors associated with unacceptable knowledge, attitudes and practices of patients with type 2 diabetes on cardiovascular risk factors and diabetes-related complications in two health facilities of the West Region of Cameroon during the COVID-19 pandemic

Objective

To assess the level of knowledge, attitudes and practices (KAP) among patients with type 2 diabetes mellitus (T2DM) regarding cardiovascular risk factors (CVRF) and diabetes-related complications in two hospitals in the West Region of Cameroon during the COVID-19 pandemic.

Design

This was a prospective cross-sectional study conducted over 5 months from April to September 2022.

Setting

This study was conducted in two tertiary hospitals in the West Region of Cameroon, in Central Africa.

Participants

It included all patients with T2DM receiving care at these two hospitals, having agreed to participate and followed up in both hospitals for at least 3 months.

Primary and secondary outcome measures

Sociodemographic, clinical and treatment data were collected using a data sheet, and KAP scores were based on the Essi and Njoya framework. Data collection and analysis were performed using SPSS V.23.0 software. Logistic regression was used to identify the factors associated with unacceptable KAP (p

Results

A total of 140 participants (71 women) with an average age of 63 years and an average diabetes duration of 6.14±5.7 years were included. Most (55%) were managed by general practitioners. The main CVRFs identified were hypertension (11%) and overweight (6%), while the leading complications included visual disorders (10.7%), hypoglycaemia (6.4%) and erectile dysfunction (2.1%). Knowledge was good in 34.3% of participants, only 25.7% demonstrated correct attitudes, and merely 15.7% engaged in adequate practices. Unacceptable knowledge was associated with diabetes duration between 3 months and 5 years (OR: 0.34 (95% CI 0.14 to 0.85), p=0.021), follow-up by a specialist (OR: 0.31 (95% CI 0.13 to 0.74), p=0.009), the presence of at least one CVRF (OR: 0.03 (95% CI 0.00 to 0.23), p

Conclusion

Few people with T2DM presented good knowledge, right attitudes and adequate practices. Enhanced patient education and increasing specialist numbers are essential to promote self-management of the condition and to decrease the incidence of complications and mortality.

Molecular characterization of <i>Rhipicephalus microplus</i> and <i>Haemaphysalis bispinosa</i> ticks from cattle across Thailand: Regional identification and evidence of different genetic sub-structures between mainland and penins

by Danai Sangthong, Pradit Sangthong, Warin Rangubpit, Prapasiri Pongprayoon, Eukote Suwan, Kannika Wongpanit, Wissanuwat Chimnoi, Pacharathon Simking, Sinsamut Sae Ngow, Serge Morand, Roger W. Stich, Sathaporn Jittapalapong

Phylogenetic and population genetic analyses were conducted on tick specimens collected from cattle in northern, northeastern, central, and southern regions of Thailand. Morphological identification indicated these ticks consisted of three species, Rhipicephalus microplus from all four regions, R. sanguineus from the northern and northeastern regions, and a Haemaphysalis species only collected from the northeastern region. Analysis of cytochrome c oxidase subunit I gene (COI) sequences identified R. microplus clades A and C, while clade B was not detected in this study. The same analysis indicated specimens morphologically identified as Haemaphysalis were H. bispinosa, confirming previous reports of their prevalence in northeastern Thailand. H. bispinosa showed low haplotype and nucleotide diversity, suggesting either a bottleneck or founder effect. Both R. microplus clades displayed high haplotype diversity and low nucleotide diversity, a pattern associated with population expansion. Genetic structural analysis revealed significant genetic differences in R. microplus clade A, especially between mainland (northern, northeastern, and central regions) and peninsular (southern region) populations, which indicated limited gene flow between these areas while suggesting movement of these ticks across the mainland. The sequence analyses described in this report enhance understanding of the natural history of ticks in Thailand and are expected to guide and strengthen tick control strategies across Southeast Asia.

Optimising healthcare workforce training and deployment: qualitative experiences from stakeholders in Tanzania

Por: Nyongole · O. V. · Sirili · N. · Mwakilasa · M. T. · Temba · P. · Mkoka · D. A. · Akoko · L. · August · F. · Kiwango · G. · Kaale · E. · Kamori · D. · Mbawala · H. · Sangeda · R. Z. · Mbugi · E. V. · Balandya · E. · Kamuhabwa · A. A. R. · Kakoko · D.
Objective

To explore the experiences of different stakeholders on the balance of package training and deployment of highly skilled Human Resources for Health for specialised services in Tanzania.

Design

An exploratory qualitative case study was used as part of a larger tracer study conducted by Muhimbili University of Health and Allied Sciences (MUHAS) for its postgraduate programmes being a requirement for quality assurance. Semi-structured interview guides were used for in-depth interviews (IDIs) and focus group discussions (FGDs). Qualitative content analysis was adopted to analyse the data.

Setting

The trace study was carried out in all seven geopolitical zones of the Tanzania mainland and Unguja in Zanzibar.

Participants

We conducted 14 FGDs and 301 IDIs. Participants included alumni, immediate supervisors at employment sites, MUHAS faculty, continuing students at MUHAS and management of professional councils in Tanzania.

Results

Key findings revealed variations in demands and recognition within the scheme of services, even after registration by professional councils. Five main themes emerged from the qualitative interviews: Package training to improve service provision, Unprofessional collegial relationships or issues related to professionalism within interdisciplinary teams, Silence of scheme services on super specialisation in the medical cadre, Silence of scheme services on specialisation in the nursing cadre, Integrated scheme of services for specialties in pharmacy.

Conclusion

The findings highlight the demand for specialised training, challenges with professionalism and inconsistencies in the recognition and remuneration of specialists across medical, nursing and pharmacy cadres within existing service schemes. There is a need for harmonisation between specialisation/super specialisation and the scheme of services. This harmonisation is crucial to ensure the provision of quality healthcare services. Furthermore, harmonisation requires multistakeholder engagement to realise universal health coverage strategies.

Duffy-null variant and practical implications for patient care: a scoping review

Por: Asiimwe · E. · Ngo · T. P. · Ziv · E. · Leavitt · A. D.
Objective

To evaluate and map research examining clinical associations with the Duffy-null variant.

Design

Scoping review of the existing literature.

Data sources

We conducted a systematic search of PubMed, Embase, CINAHL and Web of Science for studies published in English between 1 January 2000 and 25 June 2024.

Eligibility

Studies were eligible for inclusion if they examined associations relevant to current standard clinical practice and met our protocol’s inclusion criteria.

Data extraction

We extracted the following information from included studies: study year(s), patient population, sample size, study design, primary outcome and primary findings. Studies were grouped by outcome and synthesised in tabular and qualitative formats.

Results

A total of 2737 studies were screened, and 44 met our inclusion criteria. Most studies were observational, and the most common research question examined was the association with resistance to Plasmodium vivax malaria (9/44). Overall, we observed that the association between the Duffy-null variant and asymptomatic lower absolute neutrophil count (ANC) is demonstrated in large prospective cohort studies. The association with resistance to P. vivax malaria is primarily supported by large cross-sectional studies. There were no studies examining the practical applications of these findings, for example, optimal Duffy-genotype adjusted ANC thresholds for clinical decision-making in patients receiving chemotherapy. Finally, we observed that 19 different associations with this trait have been explored, several in conditions with no clear link to the Duffy trait, for example, progression rates in HIV/AIDS, risk of diabetes, etc.

Conclusions

We found established associations between the Duffy-null variant and asymptomatic lower ANC and with resistance to P. vivax malaria but a lack of data for the practical utilisation of these findings in clinical care. Future studies, such as those examining safe ANC values for entry into clinical trials and for ANC nadir for Duffy-null patients receiving medications associated with increased risk of neutropenia, for example, clozapine, are needed. We observed numerous reported associations of unclear clinical utility. Studies investigating associations with the Duffy trait should be guided by biologic plausibility and clinical utility of positive findings.

Self-reported sexually transmitted infections among adults in South and Southeast Asian countries: a multilevel analysis of recent DHS data (2015-2023)

Por: Sabo · K. G. · Mare · K. U. · Lahole · B. K. · Wengoro · B. F. · Demeke · H. S. · Mohamed · A. A. · Bilal · M. A. · Moloro · A. H.
Objective

To assess the pooled prevalence of self-reported sexually transmitted infections (STIs) and their associated factors among adults in South and Southeast Asia, using the Demographic and Health Survey data collected between 2015 and 2023.

Design

A community-based cross-sectional study design was conducted using a multistage cluster sampling approach. Multilevel multivariable logistic regression analysis was employed to identify predictors of self-reported sexually transmitted infections (STIs). Model selection was guided by Akaike’s information criterion, and adjusted odds ratios (AORs) with 95% CIs were estimated to determine statistically significant associations.

Setting

South and Southeast Asia.

Participants

This analysis included a weighted sample of 791 019 adults aged 15–49 who reported ever having had sexual intercourse. The majority of the participants were female (n=6 87 880; 87%), and most were from Southeast Asia (n=7 00 539; 89%).

Results

The pooled prevalence of self-reported STIs among adults in South and Southeast Asia was 12.94% (95% CI 7.73% to 18.14%). At the individual level, higher odds of reporting STIs were associated with being female (AOR 1.84; 95% CI1.68 to 2.02), having middle (AOR 1.11; 95% CI 1.04 to 1.19) or high wealth status (AOR 1.15; 95% CI 1.07 to 1.24]), being employed (AOR 1.14; 95% CI 1.07 to 1.22), having multiple sexual partners (AOR 2.79; 95% CI 2.22 to 3.52) and having undergone HIV testing (AOR 1.10; 95% CI: 1.02 to 1.20). Conversely, lower odds of self-reported STIs were observed among individuals aged 35–39 years (AOR 0.78; 95% CI 0.66 to 0.92), 40–44 years (AOR 0.68; 95% CI 0.58 to 0.82) and 45–49 years (AOR 0.61; 95% CI 0.52 to 0.73); those who had ever been in a union (AOR 0.71; 95% CI 0.62 to 0.83); individuals with higher education (AOR 0.84; 95% CI 0.76 to 0.93); and those with comprehensive HIV knowledge (AOR 0.82; 95% CI 0.77 to 0.87). At the community level, high illiteracy rates (AOR 1.25; 95% CI 1.15 to 1.35) and high media non-exposure (AOR 1.11; 95% CI 1.02 to 1.20) were positively associated with STIs, while rural residence (AOR 0.81; 95% CI 0.74 to 0.89) and living in Southeast Asia (AOR: 0.47; 95% CI 0.42 to 0.53) were linked to lower odds of self-reported STIs.

Conclusions

A substantial prevalence of self-reported STIs was observed among adults in South and Southeast Asia. Both individual- and community-level factors influence STI risk. The individual-level determinants include socio-demographic characteristics, sexual behaviours, HIV-related knowledge and testing history, while community-level factors reflect disparities in geographic location, educational attainment and media exposure.

Photobiomodulation for postoperative pain relief following conventional periapical surgery: a randomised controlled study protocol

Por: Cirisola · R. W. C. · Moya · L. E. P. · Olazabal · M. V. G. · Wagmann · D. A. A. · Suarez · G. P. · Wince · C. · Bruno · M. L. H. · Salaberry · D. R. · Sobral · A. P. T. · Longo · P. L. · Motta · L. J. · Bussadori · S. K. · Duran · C. C. G. · Fernandes · K. P. S. · Mesquita-Ferrari
Introduction

Photobiomodulation (PBM) has shown promising effects in managing postoperative pain following conventional periapical surgery, although current evidence remains limited. This study aims to assess the effect of PBM on postoperative pain 24 hours after periapical surgery.

Methods and analysis

A randomised, controlled, double-blind trial will include 34 patients undergoing periapical surgery in the maxillary region, randomly assigned to an experimental group (n=17) or control group (n=17). The experimental group will receive PBM (GaAlAs diode laser, 808 nm, 100 mW, 4 J/cm², applied at five vestibular points) and placebo ibuprofen immediately and 24 hours postoperatively. The control group will receive simulated PBM and active ibuprofen. The primary outcome is postoperative pain assessed by the visual analogue scale at 24 hours. Secondary outcomes include pain at the seventh day, paracetamol intake, oedema, ecchymosis, soft tissue status and temperature at 24 hours and 7 days. Radiographic evaluation of healing will be performed at 1 and 3 months. Statistical analysis will be conducted based on data distribution, using repeated measures ANOVA (Analysis of Variance) or non-parametric equivalents for longitudinal outcomes, and appropriate tests for categorical variables. Significance will be set at p

Ethics and dissemination

The study was approved by the Human Research Ethics Committee of Universidad Católica del Uruguay (process no. 220914). Results will be disseminated to participants, healthcare professionals, the public and scientific communities.

Trial registration number

NCT05935306.

Factors promoting eRegister and data use for evidence-based midwifery practice in Lesotho: a qualitative study

Por: Seeiso · T. · Mhlongo · E. M.
Objectives

Electronic health register's (eRegisters) use have recently gained popularity in Africa. eRegisters are used to capture real-time patient information on several encounters with a healthcare provider. Given poor maternal and child health outcomes in Lesotho, eRegisters provide a promising innovative means of enhancing health outcomes, especially those related to midwifery. eRegisters capture maternal and newborn care services provided at healthcare facilities. Such data are important for informing evidence-based midwifery practice. Lesotho, a landlocked, sub-Saharan African country, piloted use of an eRegister in 2018. However, factors promoting eRegister and data use have not been fully documented. Therefore, this study explored factors promoting eRegister and data use for midwifery practice in Lesotho.

Design

The study used a descriptive qualitative approach with interviews and focus group discussions used to collect data. Descriptive content analysis as outlined by Erlingsson and Brysiewicz (2017) was followed during data analysis.

Setting

The study was conducted at three of the eRegister piloting facilities in Lesotho to examine eRegister implementation across different levels of care. Data collection occurred between December 2023 and March 2024.

Participants

Purposive sampling was used to recruit healthcare workers across the three facilities. Participants were selected to capture the range of relevant roles and experience with eRegister across each facility, and 7, 6 and 5 participants were recruited.

Results

Five categories emerged as factors promoting eRegister and data use: system readiness, organisational environment, data value and utility in practice, human resource competency and digital literacy and governance and stakeholder engagement.

Conclusion

This study identified critical factors that promote the use of the eRegister and data in Lesotho. The findings suggest that while external funding and partner responsiveness have been pivotal in sustaining eRegister operations, long-term sustainability will require stronger national ownership, including domestic investment in infrastructure, technical support and digital health governance. Future studies should explore the effect of eRegister use on clinical outcomes and examine strategies for scaling up digital health interventions in resource-limited settings.

Non-invasive respiratory support in paediatric critical care: protocol for a cohort study emulating the FIRST-line support for Assistance in Breathing in Children (FIRST-ABC) step-up randomised clinical trial using routinely collected data from the Paedia

Por: Giallongo · E. · Carroll · O. · Ramnarayan · P. · Mitting · R. · Seaton · S. E. · Shortt · D. · Mason · A. J. · Harrison · D. A. · Grieve · R.
Introduction

The development of the target trial emulation (TTE) methodology has enhanced the conduct of non-randomised studies. By leveraging readily available routinely collected data, TTEs offer opportunities for complementing randomised controlled trials (RCTs), providing more precise estimates and improving the external validity of RCTs. To explore this potential, we selected a successfully completed RCT as a case study. In the FIRST-line support for Assistance in Breathing in Children (FIRST-ABC) step-up RCT, high flow nasal cannula (HFNC) was found to be non-inferior to continuous positive airway pressure (CPAP) in terms of time to liberation from respiratory support in the paediatric critical care setting. We will emulate the FIRST-ABC step-up trial using routinely collected data from the Paediatric Intensive Care Audit Network (PICANet) database.

Methods and analysis

This is a protocol for a TTE that will use longitudinally collected data from the PICANet database. The study aims to emulate the FIRST-ABC step-up RCT using an observational study design in a frequentist framework. We will benchmark the results against the published trial. The study will apply a new-user design by selecting children admitted to paediatric intensive care units that started HFNC or non-invasive ventilatory support (as a surrogate for CPAP). The eligibility criteria and selected outcomes will reflect those of FIRST-ABC within the constraints of the available routinely collected data. We will use advanced quantitative doubly robust methods to minimise the impact of confounding by indication and allow for heterogeneity according to child characteristics. The analysis will be repeated using a Bayesian approach for follow-up research.

Ethics and dissemination

The research received ethics approval from the London School of Hygiene & Tropical Medicine Research Ethics Committee. This study will expand the findings from the FIRST-ABC step-up RCT, providing additional insight from a large representative sample using real-world data. The frequentist and Bayesian approaches will enable a discussion about the advantages and drawbacks of the two strategies. The results will be disseminated to the research and clinical community and made accessible to the public. In addition, the study results will be used in future research, which aims to supplement RCTs with additional evidence from a TTE.

Mortality and associated factors among hospitalised COVID-19 patients in Lira regional referral hospital, a cross-sectional study

Por: Ongoli · A. · Opio · B. · Opollo · M. S. · Akello · A. R. · Kiweewa · F. · Omech · B.
Background

Coronavirus disease 2019 (COVID-19) caused a global public emergency between 2020 and 2022 with various morbidity and mortality across the regions. While the impact in sub-Saharan Africa appeared relatively limited, data from regional referral hospitals remain scarce.

Objective

To determine the in-hospital mortality rate, risk factors and clinical characteristics of COVID-19 patients admitted to the COVID-19 treatment unit (CTU) at Lira Regional Referral Hospital (LRRH) in northern Uganda

Design

Cross-sectional study with the use of secondary data

Setting

This study was conducted at LRRH between January 2023 and December 2023. The data used were for patients admitted from May 2020 to March 2022.

Participant

Records of 490 patients admitted with laboratory confirmed COVID-19 were collected and analysed. Selection was by simple census sampling technique. Inclusion criteria were moderately to critically ill patients and those with mild/asymptomatic infection but with comorbidities.

Results

Of the 490 participants, 52% were females and 41% were aged ≥60 years. The most common symptoms were cough (89.6%), difficulty in breathing (78.8%) and chest pain (69.3%). Hypertension (30%), diabetes mellitus (19.5%) and human immunodeficiency virus (10%) were the leading comorbidities. Severe and critical illness was observed in 40% and 7% of cases, respectively. The overall in-hospital mortality rate was 29%. Factors significantly associated with reduced mortality included normal oxygen saturation (SPO2) (adjusted odds ratios (aOR) 0.11, 95% CI 0.03 to 0.44), normal body temperature (aOR 0.22, 95% CI 0.05 to 0.99), absence of chronic liver disease (aOR 0.01, 95% CI 0.001 to 0.46) and younger age (31–45 years; aOR 0.14, 95% CI 0.03 to 0.74).

Conclusion

The study revealed a high in-hospital mortality rate of 29% among COVID-19 patients admitted to the CTU at LRRH, primarily driven by severe disease presentation and limited access to critical interventions such as oxygen therapy. Independent predictors of survival included younger age, normal oxygen saturation, absence of chronic liver disease and normal body temperature at admission. These findings underscore the urgent need for early identification of high-risk patients and improved access to supportive care, particularly oxygen delivery systems, to reduce mortality in future outbreaks. Strengthening diagnostic capacity, clinical monitoring and preparedness for respiratory pandemics—alongside prospective studies capturing broader patient data—will be essential to refine response strategies and improve outcomes.

Development and Evaluation of Precision Health Competencies

ABSTRACT

Aim

To develop precision health (PH) competencies and evaluate their comprehensiveness and fit into nursing practice.

Design

A modified e-Delphi technique was used to gather perceptions and achieve consensus on the inaugural set of PH domains, competency statements and sub-competencies developed by a workgroup formed under the aegis of the American Nurses Association (ANA).

Methods

A set of PH competencies and sub-competencies was developed by the ANA workgroup, beginning with a literature review, followed by a multi-step work process of the group over 3 years (2022–2025). Then, a modified e-Delphi technique was conducted via a four-point Likert scale Qualtrics survey, using a purposive sample of PH experts. The respondents were asked to agree or disagree with each competency or sub-competency statement and suggest modifications. The threshold of concordance was set at 80%.

Results

The ANA workgroup reached consensus on six domains, six competency statements and 43 sub-competency statements to represent PH in nursing practice in its entirety. Forty experts in the field evaluated and offered revisions to the final 44 sub-competencies that represent the knowledge and skills necessary for PH in general nursing practice. A majority of the competency statements obtained favourable agreement from the expert panel, and a typical pattern of convergence was observed over two rounds of evaluation.

Conclusions

The development of PH competencies is the essential first step in the attempt to integrate PH into nursing practice.

Implications

The competency statements will inform nursing curricula, clinical practice guidelines, funding opportunities and role expectations in all healthcare settings.

Impact

This work sets the stage for subsequent interprofessional practice initiatives and research exploring how these competencies influence patient outcomes, workforce readiness and the practical integration of advanced technologies into precise care.

EEG difference in the Higuchi fractal dimension of wakefulness and sleep from birth to adolescence

by Francesco Colussi, Jacopo Favaro, Claudio Ancona, Edoardo Passarotto, Maria Federica Pelizza, Eleonora Lorenzon, Simone Ruzzante, Stefano Masiero, Giorgio Perilongo, Giovanni Sparacino, Irene Toldo, Stefano Sartori, Maria Rubega

Brain maturation from birth to adolescence involves profound transformations in neural dynamics, which can be studied in a minimally invasive manner using quantitative EEG. Most of the results published in the literature are based on spectral analysis approaches, which are extremely effective in detecting and assessing EEG rhythms. However, some aspects of EEG dynamics can only be investigated using nonlinear approaches, the use of which is still relatively unexplored in the pediatric population. The aim of the present paper is to assess the EEG differentiation of wakefulness from deep sleep (quiet sleep in neonates, stage N3 in older children) and its maturation across a wide developmental window (0–17 years) using the fractal dimension. Specifically, Higuchi fractal dimension (HFD) algorithm is used to analyse both wakefulness and sleep EEG recordings collected from 63 infants (aged 0-1 year) and 160 children (aged 2-17 years). To ensure methodological consistency, a data-driven criterion for the selection of HFD user parameters is implemented to enhance reproducibility. Our results show that HFD during wakefulness increases during the first year of life, followed by a stabilization or slight decrease in later years. In contrast, HFD during sleep exhibits a more stable profile, with only a mild increase over development. These findings are consistent with known neurodevelopmental processes—including synaptogenesis, pruning, and white matter maturation—and support the interpretation of HFD as a sensitive marker of large-scale integrative brain dynamics. These physiological trajectories of HFD both in wakefulness and sleep could be used as reference for future clinical applications in pediatric neurology and developmental monitoring.

Prevalence and causes of blindness and vision impairment in Western Uganda: Findings from a rapid assessment of avoidable blindness (RAAB) survey

by Mostafa Bondok, Moses Kasadhakawo, John Onyango, Oscar Turya, Khumbo Kalua

Purpose

To determine the prevalence and causes of blindness and vision impairment (VI) among adults aged ≥50 years in Western Uganda.

Methods

A population-based cross-sectional survey was conducted in Western Uganda (July-August 2023) using RAAB7. Adults aged ≥50 years who had resided in the study districts for at least six months in the past year were eligible. Participants were identified through door-to-door household visits using a two-stage cluster sampling approach. Primary outcomes include prevalence of blindness and VI and its causes. Secondary outcomes include cataract surgical coverage (CSC), effective CSC (eCSC), refractive error coverage (REC), and effective REC (eREC).

Results

A total of 3,125 participants were examined (54.1% female). The adjusted prevalence of blindness (presenting visual acuity (PVA) Conclusion

Blindness and vision impairment remain major public health issues in Western Uganda, primarily due to untreated cataract and uncorrected refractive error. Poor post-operative outcomes highlight the urgent need to improve surgical quality. These findings may guide targeted interventions and policy to strengthen eye care services.

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