Primary healthcare (PHC) workforce shortages remain a critical global and national challenge, threatening progress toward Universal Health Coverage. Limited research has examined career-stage-specific motivations and deterrents. This study explores how perceptions of PHC careers differ between final-year medical students and current PHC providers, offering insights for targeted recruitment and retention strategies.

We conducted semi-structured face-to-face and online interviews (November 2023 to December 2024) with final-year medical students and primary healthcare providers (PCPs) from Greater Bay Area institutions. Participants were purposively sampled to ensure diversity in key characteristics. Interviews continued until thematic saturation was reached. Data were analysed thematically using Braun and Clarke’s six-step framework.

Interviews with 17 PCPs and 13 students identified five themes: systemic and institutional factors, education and training, professional development, community perceptions and personal motivations and trade-offs. The analysis identified common barriers across the participant groups, including inadequate resources, fragmented health information systems, unstructured career pathways and inequitable pay-for-performance mechanisms. Career-stage differences were notable: students associated success with hospital-based specialisation and viewed PHC as a fallback option, influenced by limited PHC training exposure, unclear advancement pathways and prevailing stigma. In contrast, PCPs described professional fulfilment through developing niche expertise and fostering continuity of care, increasingly perceiving PHC as an innovative platform for specialised practice. PCPs with prior hospital experience described their transition from hospital settings as motivated by burnout and the pursuit of better work–life balance, an opportunity often overlooked in workforce planning.

Career-stage-specific recruitment strategies are essential to strengthen the PHC workforce. Policies that address early-career and mid-career needs, establish structured development pathways and enhance the societal value of PHC will be critical to building a resilient primary care system. Findings offer practical implications for health system reforms in China and other countries advancing toward Universal Health Coverage.

Suicidal thoughts and behaviours (STB) are a critical public health concern, with 700 000 deaths by suicide each year. The period immediately following hospital discharge is associated with an elevated risk for suicide. Monitoring suicidal ideations throughout this period is therefore critical. However, its highly dynamic nature limits the utility of traditional risk assessments through infrequent outpatient visits. Recent advancements in ambulatory assessments and multimodal predictive approaches offer a promising new avenue. Hence, the present study aims to examine how psychological, linguistic, neurobiological and smartphone-based characteristics relate to suicidal ideation and to improve STB monitoring through a deep phenotyping approach.

In this interdisciplinary, multicentre, prospective observational study, we plan to recruit a total of 200 inpatients with current and/or past STB. The study comprises the following components: (1) a baseline assessment, conducted while participants are still in the hospital. This includes interviews, an electroencephalography recording, a video-recorded verbal task and self-report questionnaires; (2) data collection through a smartphone application during the first 4 weeks after hospital discharge with two active collection weeks of five daily ecological momentary assessments and two 1 min video diaries every other day, as well as smartphone passive sensing for 28 consecutive days and (3) two follow-up assessments, 4 weeks and 3 months after discharge. The primary outcome is self-reported suicidal ideation after hospital discharge.

The Ethics Committee of the Faculty of Arts and Social Sciences of the University of Zurich, Switzerland, approved the study for the Zurich and Basel sites (Ref: 22.09.19). Approval for the New York Site was granted by the Institutional Review Board of NYU Langone Health (i23-00366). Study findings will be disseminated via peer-reviewed, open-access publications, conference presentations, patient and public events, and dedicated social media outlets.

CRSII5_205913.

A growing number of national diagnostic reference levels based on clinical indications (NDRL_ci) in CT have been implemented worldwide since the International Commission on Radiological Protection’s 2017 recommendation. This study aims to compare NDRL_ci practices, identify influencing factors and propose evidence-based recommendations for NDRL_ci development, based on the literature published between 1996 and 2025.

Systematic review.

A systematic literature search was conducted in PubMed, Web of Science and Scopus from 1996 to 24 august 2025. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis framework was followed to report the study selection process in this review. Joanna Briggs Institute’s critical appraisal tools were used to evaluate the articles critically.

Adult patients undergoing CT scans for various clinical indications.

Clinical indication-based CT protocols with reported NDRL_ci values as CT dose index volume and dose length product (DLP).

The primary outcomes were NDRL_ci values reported for various clinical indications. The secondary outcomes were CT technology, protocol parameters and patient characteristics influencing NDRL_ci.

A total of 4146 articles were identified. 410 full texts were examined and 11 studies were included in the systematic review. 25 clinical indications across seven anatomical regions were identified across 11 included studies. The NDRL_ci for urinary stones and cerebrovascular accident had the highest number of references, while flank pain and occlusion had the lowest number. The highest NDRL_ci in DLP was found for total body CT in severe trauma (3830 mGy cm) and the lowest for sinusitis (70 mGy cm).

Several factors contribute to dose discrepancies for the same clinical indications in CT imaging, including kilovolt peak and milliampere-second, scan length, number of phases, patient size, reconstruction algorithm, CT scanner age and specifications, underscoring the need for standardised and optimised CT protocols. This review highlighted several challenges, which emphasise the importance of international organisations to standardise the development of NDRL_ci to improve comparability across countries.

CRD42024603574.

Administering supplemental oxygen to prevent hypoxaemia is a fundamental treatment for patients hospitalised with acute injury or illness. However, the amount of oxygen administered frequently exceeds that needed to maintain normoxaemia, causing patients to experience hyperoxaemia and wasting supplemental oxygen. Closed-loop, autonomous oxygen titration systems are designed to optimise oxygen delivery by administering the lowest possible oxygen flow that maintains peripheral oxygen saturation (SpO₂) within a predefined range. For adults hospitalised with an acute injury or illness, it remains uncertain whether the use of a closed-loop, autonomous oxygen titration system safely increases the proportion of time spent in normoxaemia (SpO₂ 90%–96%) compared with usual care.

The Strategy to Avoid Excessive Oxygen using Autonomous Oxygen Titration Intervention trial is a multicentre, unblinded, parallel-group, randomised trial being conducted at four level 1 trauma centres in the USA. The trial compares an autonomous oxygen titration system versus usual care among 300 adults hospitalised for major trauma, burn, acute care surgery or acute respiratory illness. The primary outcome is the proportion of patient-time spent within the targeted normoxaemia range (SpO₂ 90%–96%) as measured by continuous non-invasive pulse oximetry, during the first 72 hours after randomisation. Secondary outcomes include the amount of supplemental oxygen administered and the proportion of time spent in hypoxaemia (SpO₂2 >96%). Specifying the protocol and statistical analysis plan before the conclusion of enrolment increases the rigour, reproducibility and interpretability of the trial. Enrolment began on 6 May 2024.

The trial protocol was approved by the single institutional review board at the University of Colorado School of Medicine and the Office of Human Research Oversight at the Department of Defense. We will present the results at scientific conferences and submit them for publication in a peer-reviewed journal.

NCT06374225.

To test the agreement and usability of a novel quality appraisal tool: A MeaSurement Tool to Assess systematic Reviews of Prognostic Factor studies (AMSTAR-PF).

Observational study.

14 appraisers of varied experience levels and backgrounds, including undergraduate, master’s and PhD students, postgraduate researchers, research fellows and clinicians.

Eight systematic reviews were rated by all reviewers using AMSTAR-PF.

Planned measures included intrapair and inter-pair agreement using Cohen’s and Fleiss’ kappa, time of use and time to reach consensus. Interrater agreement was an added measure, and Gwet’s agreement coefficient was calculated and presented due to its greater stability across agreement levels. The percentage of intrapair agreements identical or one category apart was also presented.

Interrater agreement averaged 0.59 (range 0.21–0.90), inter-pair agreement 0.61 (range 0.24–0.91) and intrapair agreement 0.75 (range 0.45–0.95) across the domains, with agreement for the overall rating 0.46 (95% CI 0.30 to 0.62) for interrater agreement, 0.46 (95% CI 0.17 to 0.74) for inter-pair agreement and 0.68 (range of averages 0.22–1.00) for intrapair agreement. The majority (60.7%) of intrapair ratings were identical, with 94.6% of final ratings either identical or only one category different for the overall appraisal. The time taken to appraise a study with AMSTAR-PF improved with use and averaged around 34 min after the first two appraisals.

Despite some variance in agreement for different domains and between different appraisers, the testing results suggest that AMSTAR-PF has clear utility for appraising the quality of systematic reviews of prognostic factor studies.

Outcome reporting in studies on sacrococcygeal teratoma (SCT) is highly heterogeneous, which limits comparability across studies and thus hampers the development of international treatment guidelines.

Variation in treatment and access to facilities contributes to differences in outcome reporting between centres and countries. Establishing a Core Outcome Set (COS) can improve consistency in outcome reporting and facilitate global collaboration and data comparison. We therefore aim to develop a Core Outcome Set for SCT (COS-SCT) using the Delphi method to achieve consensus on key outcomes. This will enhance the standardisation of outcome reporting and improve the quality of research and clinical care for SCT patients globally.

The development of the COS-SCT will consist of three phases. First, a systematic review will be performed to identify outcomes reported in studies on the surgical treatment of SCT in children. Second, an international Delphi survey will be conducted among key stakeholders, including clinicians, researchers and patient representatives, to establish consensus on outcome prioritisation. Finally, a consensus meeting with representatives from all stakeholder groups will be held to ratify the final Core Outcome Set. The study will follow methodological guidance from the Core Outcome Measures in Effectiveness Trials (COMET) initiative and will be developed and reported in accordance with the Core Outcome Set Standards for Development (COS-STAD) and Core Outcome Set Standards for Reporting (COS-STAR).

The medical research ethics committee of the Amsterdam University Medical Centre (Amsterdam UMC) confirmed that the Dutch Medical Research Involving Human Subjects Act (WMO) does not apply to this study, and therefore a full review by the ethics committee is not required. This study is registered in the COMET initiative database. Results will be disseminated in peer-reviewed academic journals and conference presentations.

Trial registration number: COMET registration number 3485

Treatment failure remains a major challenge in tuberculosis (TB) management. Rapid and objective assessment of treatment response is essential, as existing tools have limited accuracy and slow turnaround times. The PATHFAST TB LAM Ag assay (PATHFAST-LAM), an automated chemiluminescent enzyme immunoassay, was developed to quantify lipoarabinomannan (LAM) in sputum within 1 hour. Previous studies have shown a strong correlation between sputum LAM concentration and culture-based bacterial load. However, its clinical utility for predicting poor outcomes during treatment has not been prospectively evaluated.

We will conduct a prospective longitudinal study enrolling newly diagnosed, bacteriologically confirmed patients with pulmonary TB at Rhodes Chest Clinic and Mbagathi County Referral Hospital in Nairobi, Kenya. We will follow participants throughout the 6-month treatment course, attempting to collect sputum weekly during weeks 1–4, biweekly during weeks 5–12 and monthly during months 3–6. We will measure LAM concentrations at these time points using the PATHFAST-LAM assay. The primary outcome is to assess whether changes in sputum LAM concentration during the intensive phase (baseline to week 4 and/or week 8) predict a composite poor outcome, defined as positive sputum culture at month 6, treatment failure, death during treatment or relapse within 3 months after treatment completion. The primary endpoint is the area under the curve from the receiver operating characteristic analysis, representing the predictive performance of changes in sputum LAM concentration for the composite poor outcome. We will identify the optimal cut-off value for LAM change and estimate sensitivity and specificity with 95% CIs using 2x2 tables. We will apply an adaptive design that allows sample-size re-estimation after interim analysis.

The study was approved by the Kenya Medical Research Institute (KEMRI/SERU/CRDR/124/5241) and Nagasaki University (250619327). Findings will be disseminated through peer-reviewed publications and scientific meetings.

NCT07157904.

The work of receptionists in general practice is evolving rapidly and becoming more complex due to a number of changes within primary and community care services, such as increased digitalisation. In under-served areas, these changes have been further complicated by under-resourcing and workforce challenges around staff recruitment and retention. The National Health Service (NHS) 10-year health plan is set to accelerate further significant changes. There is limited understanding about how and why these changes and workforce challenges are impacting and will impact the future work of receptionists in general practice in under-served areas.

This realist review will build on an existing programme theory related to general practitioner workforce sustainability. The review will examine what works, for whom, how and under what circumstances for receptionist work in general practice, in under-served areas. For example, how influences such as the expectations of patients (in under-served communities), poor staffing or limited career progression. Key stakeholders, including public contributors and individuals from general practice settings, will inform the realist review.

The review will be conducted using existing secondary and grey literature sources. The search strategy comprises five electronic databases: Medline, Embase, PsycINFO, CINAHL and Web of Science Core Collection (SCIE, SSCI, AHCI) with a date limit of 2015 applied to the search. The review will follow Pawson’s five steps: (1) shaping the scope of the review; (2) searching for evidence; (3) document selection and appraisal; (4) data extraction and (5) data synthesis. The findings will be reported in accordance with the Realist and Meta-narrative Evidence Synthesis Evolving Standards.

Ethical approval is not needed for secondary analysis. The findings of this review will contribute to ongoing work as part of our ‘Workforce Voices’ programme of research. They will be disseminated to policymakers, commissioners, providers of health and social care and primary care and community healthcare teams through peer-reviewed publications, members of the public, conference presentations, social media and recommendations.

Kerato-lenticule extraction (KLEx) is a refractive surgery technique that, in contrast with femtosecond laser-assisted in situ keratomileusis (FS-LASIK), does not require the creation of a flap to correct refractive defects. The potential advantages of this technique are related to the absence of a flap and its complications. On the other hand, FS-LASIK is the most widely practised refractive surgery worldwide, as it offers excellent visual outcomes and is currently the gold standard of refractive surgery. The objective of this study is to compare the effectiveness and safety of KLEx versus FS-LASIK as a treatment option in patients with myopia or myopic astigmatism.

This double-masked, parallel-group, single-centre randomised clinical trial will enrol 80 eyes from adults with myopia or compound myopic astigmatism within the ranges sphere –0.50 to –12.00 D and cylinder –0.50 to –6.00 D, recruited at the Instituto de Oftalmología Conde de Valenciana, Mexico City, Mexico. Participants will be allocated to KLEx or FS-LASIK and assessed at baseline and 1 day, 1 week, 1, 3, 6 and 12 months postoperatively. The primary outcome is uncorrected visual acuity at all postoperative visits. Secondary outcomes include postoperative spherical equivalent, best-corrected visual acuity (BCVA), loss of ≥2 BCVA lines, the proportion of eyes within ±0.50 D of the refractive target, corneal aberrations over a 5 mm pupil, epithelial changes and adverse events. Participants and outcome assessors will be masked to the assigned surgical technique.

Participant confidentiality will be maintained with the publication of results. This study was approved by the research and ethics committee of the Instituto de Oftalmología Fundación de Asistencia Privada Conde Valenciana (CI-017-2024). The study results will be disseminated in scientific articles published in peer-reviewed journals and presented through research posters at national and international conferences.

ClinicalTrials.gov registry (NCT06477081).

Data quality in epidemiological studies is a basic requirement for good scientific research. The aim of this study was to examine an important indicator of data quality, data completeness, by investigating predictors of missing data.

Baseline data of a cohort study, the population-based Hamburg City Health Study, were used. Missingness was investigated at the levels of a whole research unit, on the two segments of health service utilisation and psychosocial variables, and two sensitive items (income and number of sexual partners). Predictors for missingness were sociodemographic variables, cognitive abilities and the mode of data collection. Associations were estimated using binary and multinomial logistic regression models.

Of 10 000 participants (mean age=62.4 years; 51.1% women), 32.9% had complete data at the unit level, 66.8% had partially missing data and 0.3% missed all items. The highest proportions of missing values were found for income (27.8%) and the number of sexual partners (36.7%). At both the unit, segment and item level, older age, female sex, low education, a foreign mother language and cognitive impairment were significant predictors for missingness.

For analysing population-based data, dealing with missingness is equally important at all levels of analysis. During the design and conduct of the study, the identified groups may be targeted to reach higher levels of data completeness.

Adolescents in informal urban communities, defined as settlements that fall outside of formal governmental planning and regulatory frameworks, are at increasing risk of poor-quality diets and malnutrition in all its forms. The food environment is the interface of adolescent food choice and the broader food system, and food environment interventions have the potential to improve adolescent diets and nutritional outcomes.

We will conduct a mixed-methods study, integrating methods from participatory systems science and nutritional epidemiology to characterise linkages among adolescents’ neighbourhood and home food environments, and their food choices, diets and nutritional outcomes. We will recruit adolescents, caregivers, school staff and food system actors from five communities along a gradient of urban informality in Nairobi, Kenya, to participate in cognitive mapping, group-based modelling and a cohort study over one academic year to evaluate dietary choices and nutritional outcomes.

The study has been approved by the Research Ethics Committee of Rutgers University (Pro2024001981) and Amref Health Africa (P1831-2025). Adult participants will provide written informed consent, and adolescents will provide written informed assent to participate in the study. Findings will be disseminated through peer-reviewed journals, conference presentations and to participants through planned participatory interaction throughout the study.

Distal radius fractures are the most common fractures seen in the emergency department in children in the USA. However, no established or standardised guidelines exist for the optimal management of completely displaced fractures in younger children. The proposed multicentre randomised trial will compare functional outcomes between children treated with fracture reduction under sedation versus children treated with simple immobilisation.

Participants aged 4–10 years presenting to the emergency department with 100% dorsally translated metaphyseal fractures of the radius less than 5 cm from the distal radial physis will be recruited for the study. Those patients with open fractures, other ipsilateral arm fractures (excluding ulna), pathologic fractures, bone diseases, or neuromuscular or metabolic conditions will be excluded. Participants who agree to enrol in the trial will be randomly assigned via a minimal sufficient balance algorithm to either sedated reduction or in situ immobilisation. A sample size of 167 participants per arm will provide at least 90% power to detect a difference in the primary outcome of Patient-Reported Outcomes Measurement Information System Upper Extremity computer adaptive test scores of 4 points at 1 year from treatment. Primary analyses will employ a linear mixed model to estimate the treatment effect at 1 year. Secondary outcomes include additional measures of perceived pain, complications, radiographic angulation, satisfaction and additional procedures (revisions, refractures, reductions and reoperations).

Ethical approval was obtained from the following local Institutional Review Boards: Advarra, serving as the single Institutional Review Board, approved the study (Pro00062090) in April 2022. The Hospital for Sick Children (Toronto, ON, Canada) did not rely on Advarra and received separate approval from their local Research Ethics Board (REB; REB number: 1000079992) on 19 July 2023. Results will be disseminated through publication in peer-reviewed journals and presentations at international conference meetings.

NCT05131685.

The study aimed to assess the trends and factors associated with modern contraceptive use among female youths (15–24 years) in Tanzania from 2004 to 2022.

We performed secondary analysis of cross-sectional data from four consecutive Demographic and Health Surveys (DHS) in Tanzania: 2004, 2010, 2015/2016 and 2022.

Tanzania.

Sexually active female youths (n=8659).

The use of any modern contraceptive method, coded as Yes or No.

The sample had a median age of 21 (IQR 18–22 years), with 63.7% aged 20–24 years. Modern contraceptive use among female youths increased from 24.6% in 2004 to 32.1% in 2022. Consistent across surveys, modern contraceptive use was positively associated with secondary or higher education level, having one or more live births and engaging in sexual activity within the month preceding the survey. Additionally, adolescents (15–19 years) demonstrated a weak protective association, indicating a reduced likelihood of modern contraceptive use compared with young women (20–24 years). In 2015/2016 and 2022 surveys, primiparous, multiparous and married/cohabiting women were more likely to use modern contraceptives than nulliparous women.

Modern contraceptive use among female youths increased gradually in Tanzania between 2004 and 2022 Tanzania DHS. To sustain these upward trends and reduce the risk of unwanted pregnancies and sexually transmitted infections, public health policies should consider the factors positively associated with modern contraceptive use, particularly among young women aged 20–24 years, married/cohabiting, who have initiated childbearing and those with high education levels.

Disabled resident doctors face persistent structural, cultural and institutional barriers to career progression. This integrative review synthesises empirical and grey literature to identify the challenges disabled doctors encounter, the practices that support their careers and the potential solutions applicable to healthcare, in particular National Health Service (NHS), settings.

Integrative literature review using a content analysis approach to data analysis. Included sources were published in English and examined disabled doctors’ career progression or included disabled doctors as a separate subgroup. Opinion pieces without empirical grounding and articles not available in full text were excluded.

International postgraduate medical education, with consideration for transferability and applicability to the UK NHS.

Focused on the experiences and careers of disabled resident doctors, at any stage of their career, prior to completion of training.

Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses-Equity guidelines, 53 sources were included and analysed. Structural ableism, inaccessible systems and stigma around disclosure were consistently identified as barriers to career progression. Facilitators included mentorship, affirming supervisory relationships and identity-affirming networks. Promising practices included universal design approaches, anticipatory rather than reactive approaches to making adjustments and integration of disability equity into organisational governance. However, most initiatives remain unevaluated, and UK-specific evidence is limited.

While awareness of barriers is growing, evidence-based solutions remain underdeveloped and unevenly implemented. To build a sustainable and representative medical workforce, workforce policy and planning must not only remove barriers to progression for disabled doctors, but also embed disability inclusion into the structures and cultures that shape medical career paths.

The Quadrivalent human papillomavirus (HPV) Vaccine Evaluation Study with Addition of the Nonavalent Vaccine Study (QUEST-ADVANCE) aims to provide insight into the long-term immunogenicity and effectiveness of one, two and three HPV vaccine doses. Here, we describe the protocol for QUEST-ADVANCE.

QUEST-ADVANCE is an observational cohort study including males and females who are unvaccinated or vaccinated with the quadrivalent or nonavalent HPV vaccine in British Columbia, Canada. Female participants who are unvaccinated or vaccinated with 1–3 doses of the quadrivalent or nonavalent HPV vaccine at 9–14 years of age will be recruited approximately 5 or 12 years postvaccination eligibility. Male participants who are unvaccinated or vaccinated with 1 or 2 doses of the nonavalent HPV vaccine at 9–14 years of age will be recruited at approximately 5 years postvaccination eligibility. The study involves a maximum of four visits over a period of 4–5 years for female participants, and two visits over a 12-month period for male participants. At each visit, self-collected swabs (cervico-vaginal or penile) and questionnaire data will be collected. In each study group, a subset of participants will be invited to participate in a substudy evaluating the long-term humoral immunogenicity of the HPV vaccine. Additional blood samples will be collected from participants who are part of the immunogenicity substudy. The total required sample size is 7180 individuals. The primary objectives are (1) to examine vaccine effectiveness in males and females against prevalent genital HPV infections for one, two and three doses of the HPV vaccine compared with unvaccinated participants and (2) to evaluate if there is non-inferior immunogenicity as indicated by type-specific antibody response of one dose of the HPV vaccine in 20–27-year-old females vaccinated at 9–14 years of age compared with historical data of three doses of the HPV vaccine females vaccinated at 16–26 years of age up to 12 years postvaccination.

QUEST-ADVANCE was approved by the Research Ethics Board of the University of British Columbia/Children’s and Women’s Health Centre of British Columbia (H20-02111). Individual electronic informed consent or assent will be obtained from each participant before any study-specific procedures are undertaken. Results will be published in an international peer-reviewed journal and on the study website.

To examine the impact of the COVID-19 pandemic on the substitution of surgical procedures in benign gynaecology in the Netherlands.

Quantitative longitudinal study evaluating the effects of the COVID-19 pandemic.

Nationwide healthcare delivery was analysed across six benign gynaecological pathways from 2016 to 2022 using Vektis and Dutch Hospital Data (DHD), accessed via Statistics Netherlands (Centraal Bureau voor de Statistiek).

The study focused on six benign gynaecological pathways classified using Dutch Diagnosis Treatment Combinations (DTCs): heavy menstrual blood loss (G11), uterine fibroids (G15), endometriosis (G17), prolapse (G25), infertility treatment (F11) and first trimester pregnancy complications (Z12). All patients receiving care within these pathways between 1 January 2016 and 31 December 2022 were included. Exclusions applied to all patients under 18 years old and, only within the menstrual disorder pathway, patients over 51 years old to exclude most postmenopausal blood loss cases where no alternative treatment applies.

Cohorts from the initial pandemic year (2020) were compared with four prepandemic cohorts (2016–2019) and late-pandemic (2021) and postpandemic (2022) cohorts.

The primary outcome was the trend in the total number of patients in surgical and non-surgical procedure groups across cohort periods. Secondary outcomes included trends within individual pathways.

The analysis identified a significant reduction in benign gynaecological care during 2020, with an 18.3% (p

The COVID-19 pandemic significantly disrupted both surgical and non-surgical procedures within benign gynaecological pathways. Reduced care uptake during the pandemic waves was not recovered but instead forgone. The reduction in surgical procedures did not correspond with increased use of non-surgical alternatives. Future research should prioritise evaluating the long-term impacts of this disruption on patients and society.

While group, task-oriented, community-based exercise programs (CBEPs) delivered in-person can increase exercise and social participation in people with mobility limitations, challenges with transportation, cost and human resources, threaten sustainability. A virtual delivery model may help overcome challenges with accessing and delivering in-person CBEPs. The study objective is to estimate the short-term effect of an 8-week, virtual, group, task-oriented CBEP called TIME™ (Together in Movement and Exercise) at Home compared with a waitlist control on improving everyday function in community-dwelling adults with mobility limitations.

A randomised controlled trial incorporating a type 1 effectiveness-implementation hybrid design is being conducted in four Canadian metropolitan centres. We aim to stratify 200 adults with self-reported mobility limitations by site, participation alone or with a partner, and functional mobility level, and randomise them using REDCap software to either TIME™ at Home or a waitlist control group. During TIME™ at Home classes (2 classes/week, 1.5 hours/class), two trained facilitators stream a 1-hour exercise video and facilitate social interaction prevideo and postvideo using Zoom. A registered healthcare professional at each site completes three e-visits to monitor and support implementation. Masked evaluators with physical therapy training evaluate participants and their caregivers at 0, 2 and 5 months using Zoom. The primary outcome is the change in everyday function from 0 to 2 months, measured using the physical scale of the Subjective Index of Physical and Social Outcome. The study is powered to detect an effect size of 0.4, given α=0.05, power=80% and a 15% attrition rate. Secondary outcomes are mobility, well-being, reliance on walking aids, caregiver assistance, caregiver mood, caregiver confidence in care-recipient balance and cost-effectiveness. A multimethod process evaluation is proposed to increase understanding of implementation fidelity, mechanisms of effect and contextual factors influencing the complex intervention. Qualitative data collection immediately postintervention involves interviewing approximately 16 participants and 4 caregivers from the experimental group, and 8 participants and 4 caregivers from the waitlist control group, and all healthcare professionals, and conducting focus groups with all facilitators to explore experiences during the intervention period. A directed content analysis will be undertaken to help explain the quantitative results.

TIME™ at Home has received ethics approval at all sites. Participants provide verbal informed consent. A data safety monitoring board is monitoring adverse events. We will disseminate findings through lay summaries, conference presentations, reports and journal articles.

NCT06245135.

To evaluate various prioritisation strategies within an algorithm designed to ascertain the most likely ethnicity and create a standardised methodology to benefit future research.

Retrospective cohort study.

The Clinical Practice Research Datalink (CPRD) primary care and linked Hospital Episode Statistics (HES) data sets.

The population of 54 029 174 patients included all acceptable patients registered at English practices in CPRD GOLD or CPRD Aurum from the May 2023 to May 2022 builds, respectively.

Ethnicity data within CPRD and HES data sets were identified by employing established code lists and subsequently categorised into broader ethnic groups. Changes were made to a previously used algorithm to assess their effect on ethnic categorisations. Modifications included prioritising primary over secondary care data, recent over frequent records and ‘non-other’ ethnicity categories. Different data sources were examined: CPRD with all HES data sets, CPRD with HES Admitted Patient Care (APC) only, CPRD only and HES APC only. Ethnic distributions from these variations were compared using counts and percentages, evaluating inter-rater reliability using Cohen’s kappa. Sensitivity analyses included repetition using only currently registered patients and after removing cases with unknown ethnicity. Ethnic distributions were compared with English Census 2021.

There was almost perfect agreement in ethnicity distributions whether prioritising primary over secondary care data (kappa=1.0000, SE=0.0001), whether prioritising most frequently or most recently recorded data (kappa=0.9824, SE=0.0001) and whether prioritising ‘non-Other’ categories (kappa=0.9705, SE=0.0001). There was moderate agreement in ethnicity distributions when sourcing data from single data sources (CPRD only (kappa=0.5554, SE=0.0001) or HES APC only (kappa=0.5526, SE=0.0001)) compared with combined data sources (CPRD and HES datasets).

All variations of the algorithm produced similar population-level ethnicity distributions. Versions using data from multiple sources had higher inter-rater reliability than those using a subset of sources; however, there was little difference in categorisations produced by varying the hierarchical decision-making of the ethnicity algorithm. The CPRD population was representative of the English population in terms of ethnicity. While researchers should remain vigilant of the limitations of using these data, the CPRD Ethnicity Records provide a standardised and pragmatic approach to ascertaining ethnicity for future research.

Skin temperature assessment is essential for the diagnosis of cellulitis and monitoring treatment response, but is currently subjective and can contribute to overdiagnosis. We aimed to characterise skin temperature changes over time in cellulitis and compare two objective measurement approaches, a thermal imaging camera (TIC) and a non-contact infrared thermometer (NCIT).

A device comparison study nested within a prospective cohort. We measured limb temperatures daily for 4 days using a TIC and two NCITs.

Two acute hospitals in the UK’s National Health Service.

202 adults (age ≥18 years) diagnosed with lower limb cellulitis who attended hospital for antibiotic treatment.

We used linear mixed-effects models to quantify changes in temperature over time and intraclass correlation coefficients (ICC) to assess reliability. We compared temperature measurements between devices using Lin’s concordance coefficients and Bland-Altman plots with estimated 95% limits of agreement.

202 patients were included: 95% white ethnicity. Baseline limb temperature differences varied between 2.4°C and 3.4°C, depending on the device. All devices showed significant reductions in affected limb temperature per day, with the largest decrease recorded by the TIC (–0.34°C per day, 95% CI –0.48°C to –0.19°C, p

Daily temperature changes may be too small for reliable monitoring at the individual patient level, but cumulative changes from day 0 to day 3 may be sufficient for clinical interpretation, despite limitations in the precision of device measurements. NCITs’ measurement capabilities differ widely, so these devices cannot be used interchangeably. Due to this and the potential benefits of advanced thermal image analysis, TICs should be prioritised for further study in cellulitis. Future research should confirm our findings in different skin tones and explore the clinical utility of thermal imaging in enabling earlier diagnosis or detecting signs of therapeutic failure.