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To provide a nationwide epidemiological assessment of upper limb amputations (ULAs) in Germany, including incidence trends, underlying aetiologies, amputation levels and revision patterns, with a comparative analysis between 2019 and 2023.
Nationwide retrospective cross-sectional analysis of routinely collected inpatient hospital data.
All acute-care hospitals in Germany reporting to the national Diagnosis-Related Groups and Operation and Procedure Classification System (OPS) from 2019 to 2023.
All patients undergoing ULA procedures (OPS 5-862 and 5-863) or revision procedures (OPS 5-866) within the study period. No exclusion criteria were applied.
Primary measures were annual incidence of ULAs, the distribution of amputation levels and underlying medical aetiologies. Secondary measures included the incidence of revision procedures and revision aetiologies stratified by anatomical level.
A total of 5427 ULAs were performed in 2023, representing a 7.3% decrease compared with 2019 (5,852). Distal amputations remained most frequent, though proximal amputations increased proportionally over time. Above-wrist amputations were predominantly associated with malignancy (40.3%) and vascular disease (23.7%), whereas distal amputations were mainly trauma-related (43.6%). Infection-related distal amputations increased from 23.4% in 2019 to 30.4% in 2023. Revision procedures occurred in 32.4% of proximal amputations and 6.1% of distal amputations in 2023. Infection was the most common indication for distal revisions (53.3%), while infection and neuroma formation each accounted for 29.4% of proximal revisions.
This nationwide analysis provides a comprehensive epidemiological overview of ULAs in Germany, demonstrating stable overall incidence but clear level-specific differences in underlying aetiologies. Proximal amputations were mainly associated with malignant and vascular disease, whereas trauma predominated at distal levels. High rates of infection-related and neuroma-related revisions, particularly after proximal amputations, highlight the complexity of surgical management and the need for level-specific perioperative and follow-up strategies.
by Faten Al-hussein, Laleh Tafakori, Mali Abdollahian, Khalid Al-Shali
Type 2 diabetes (T2D) is a chronic condition affecting millions globally. A robust predictive model to estimate the number of new cases of T2D can facilitate precise monitoring and effective intervention strategies. This study aims to predict the number of new T2D cases per month in Saudi Arabia and identify the Key Performance Indicators (KPIs) associated with T2D, using count regression models, Poisson Regression (PR), Negative Binomial Regression (NBR), Poisson Inverse Gaussian Regression (PIGR), and Bell Regression (BR). De-identified data from 1,000 patients with T2D in Saudi Arabia were used to develop the models. The performance of the full models, which include recommended Key Performance Indicators (KPIs), is compared using metrics such as the coefficient of determination (R2), root mean squared error (RMSE), mean absolute error (MAE), 10-fold cross-validation (CV-10), Akaike information criterion (AIC), and Bayesian information criterion (BIC). The most significant KPIs identified by the full models were utilized to develop the reduced models. The full NBR model outperformed other models, achieving R² of 0.88, RMSE of 0.93, MAE of 0.69, CV-10 of 1.21, AIC = 873.23, and BIC = 880. The reduced NBR model, focusing solely on the five most influential variables (marital status, age, body mass index (BMI), total cholesterol (TC), and high-density lipoprotein (HDL)), with R² = 0.84, RMSE = 1.10, MAE = 0.86, CV-10 = 1.37, AIC = 899, and BIC = 910, also outperformed other reduced models. The Likelihood Ratio Test (LRT) did not show a significant difference between the full and reduced NBR models (p = 0.694), supporting the adequacy of the reduced model. The proposed reduced model, utilizing only five significant KPIs, can help healthcare providers develop effective, targeted strategies by monitoring a smaller number of KPIs to reduce the rising number of T2D cases in Saudi Arabia.by Donato Koyalta, Zita Aleyo Nodjikouambaye, Jonathan Muwonga Tukisadila, Hachim Djamal Abdoulaye Bargo, Suitombaye Noubaramadji Yamti, Amine Akouya, Ralph-Sydney Mboumba Bouassa, Laurent Belec
BackgroundHigh-risk (HR) human papillomavirus (HPV) infection remains a great concern in sub-Saharan Africa in men who have sex with men (MSM). The prevalence of anal shedding of HPV and associated risk factors was estimated for the first time in a cross-sectional observational study covering MSM living in N’Djamena, the capital city of Chad.
MethodsMSM were recruited from the community in 21 sites in neighborhoods of 5 districts randomly selected in N’Djamena by respondent-driven sampling (RDS) method. Anal Collector V-Veil UP2™ device was used for anal canal self-sampling. Manual silica-extracted DNA was subjected for HPV detection and genotyping using BMRT Human Papillomavirus Genotyping Real Time PCR assay (Jiangsu Bioperfectus Technologies Co., Ltd., Taizhou, China). HIV serostatus was assessed using two rapid tests in series.
ResultsA total of 70 MSM (mean age: 29.9 years; range, 18–50) were included. The overall acceptability to practice veil-based anal self-sampling was 95.9%. The usability of the veil collector device was high (92.3%), with easy understandable instructions for use and correct placement in the anal canal. Satisfaction questionnaire reported high overall feeling, intimacy respect and lack of shame. The majority of MSM (44/70, 62.8%) showed anal shedding of HPV DNA, with HR-HPV frequently detected (38,70, 54.3%), including HPV-33 (30/70, 42.9%) HPV-68 (16/70, 22.9%), HPV-18 (4/70, 5.7%), HPV-35 (3/70, 4.3%), HPV-58 (2/70, 2.9%), and HPV-45 (1/70, 1.4%). The distribution of genotypes in HR-HPV DNA-positive MSM revealed that HPV-33 (30/70; 42.9%) was the predominant genotype, followed by the HPV-68 (16/70; 22.9%), HPV-18 (4/70; 5.7%), HPV-35 (3/70; 4.3%), HPV-58 (2/70; 2.9%), and HPV-45, HPV-51 and HPV-56 (each type, 1/70;1.4%).Among all HPV detected, only 42 HPV (36.8%) were covered by Gardasil-9® vaccine, including the HR-HPV-33, −18, −58 and −45, and the low risk-HPV-6 (5.7%) and HPV-11 (1.4%). The majority of detected HPV were non-covered by Gardasil-9® vaccine (63.1%). Overall HIV prevalence was 5.7%.
ConclusionsTaken together, these observations point the MSM population in N’Djamena as a very particular core group of HIV and HPV transmission. HIV prevalence was higher than that of general adult population, but limited to only one MSM of twenty. The RDS method of recruitment allowed to include MSM likely belonging to the same sexual network of HPV transmission leading to the selection of an atypical and specific profile of anal HPV distribution. The potential efficacy of HPV prophylactic vaccination in this population can be estimated at relatively weak.
by Cindy Xinyu Ji, Majid Sorouri, Mohammad Abdollahi, Omalbanin Paknejad, Ali R. Mani
Network physiology is a multidisciplinary field that offers a comprehensive view of the complex interactions within the human body, emphasising the critical role of organ system connectivity in health and disease. This approach has the potential to provide pathophysiological insights into complex and emerging diseases. This study aims to evaluate the effectiveness of physiological network mapping in predicting outcomes for COVID-19 patients, using data from the first wave of the pandemic. Routine clinical and laboratory data from 202 patients with COVID-19 were retrospectively analysed. Twenty-one physiological variables representing various organ systems were used to construct organ network connectivity through correlation analysis. Parenclitic network analysis was also employed to measure deviations in individual patients’ organ system correlations from the reference physiological interactions observed in survivors. We observed distinct features in the correlation network maps of non-survivors compared to survivors. In non-survivors, there was a significant correlation between the level of consciousness and the liver enzyme cluster, a relationship not present in the survivor group. This relationship remained significant even after adjusting for age and degree of hypoxia. Additionally, a strong correlation along the BUN–potassium axis was identified in non-survivors, suggesting varying degrees of kidney damage and impaired potassium homeostasis in non-survivors. These findings highlight the potential of network physiology as a valuable tool for uncovering complex inter-organ interactions in emerging diseases, with applications that could support clinicians, researchers, and policymakers in future epidemics.Child-to-parent violence (CPV) has received limited attention in scientific literature, but due to a recent increase in reported cases, it has become a subject of investigation. The reliability and validity of the Child-to-Parent Violence Questionnaire (CPV-Q), in separate mother and father versions, have not yet been studied in Iran. This study aimed to assess the psychometric properties of the Persian CPV-Q.
This research employed a cross-sectional design to evaluate the Persian CPV-Q’s psychometric properties. The process included translation (using backward-forward method), face validity (via impact score calculation), content validity (using content validity ratio (CVR) and content validity index (CVI)), construct validity (through exploratory and confirmatory factor analyses (CFA)) and reliability assessment (via test–retest, coefficient α, coefficient and intraclass correlation coefficient (ICC)).
The study was conducted at the Faculties of Tabriz University of Medical Sciences.
A total of 500 qualified students from Tabriz University of Medical Sciences were recruited using cluster random sampling. These participants completed the Persian CPV-Q.
Face validity was confirmed, with impact scores exceeding 1.5 for all items. Content validity was strong, with CVR=0.92 and CVI=0.89. Exploratory factor analysis revealed four factors related to violence frequency and two factors regarding reasons for violence, consistent with the original questionnaire, covering 19 and 8 items, respectively. Total variance explained was 0.30 and 0.39 for the mother’s version and 0.33 and 0.43 for the father’s version in frequency and reason sections. The Kaiser-Meyer-Olkin test confirmed sample adequacy (
The Persian CPV-Q demonstrates adequate validity and reliability for assessing the prevalence and causes of CPV in Iranian society.
Severe perinatal asphyxia at term or near term remains a critical public health issue, associated with high risks of neonatal death and hypoxic-ischaemic encephalopathy (HIE). Despite improved clinical guidelines, suboptimal care persists in many cases, and previous audits have demonstrated that up to 50% of asphyxia cases could be associated with suboptimal care. OptiNeoCare is a French study which aims to assess the prevalence and determinants of suboptimal obstetric and neonatal care and evaluate its potential impact on neonatal outcomes.
This prospective, population-based observational study will include newborns ≥36 weeks’ gestation with severe perinatal asphyxia across 12 French perinatal networks (213 maternity units). Inclusion criteria comprise neonatal death or moderate/severe HIE with confirmed biochemical markers of asphyxia. Data will be collected prospectively from labour wards, transport teams and neonatal intensive care units using an electronic case report form, and the in-situ team will be invited to complete a morbi-mortality review (MMR). Approximately 336 cases will be included over 12 months, with 25% randomly selected for confidential enquiry by two experts. The quality of care will be assessed based on a structured classification of medical errors (diagnostic, therapeutic, preventive and systemic) by a panel of experts including an obstetrician or midwife and a paediatrician. Root cause analysis will identify determinants of suboptimal care. A concordance analysis will compare findings from MMRs and confidential enquiries. Statistical analysis will include multivariable logistic regression to explore associations between care quality and neonatal outcomes.
Ethical approval was granted by the Ethics Committee for Research in Obstetrics and Gynaecology. Informed non-opposition is required from participants. Results will be shared with participating centres, healthcare professionals and through scientific dissemination.
ClinicalTrials.gov ID: NCT06322732.
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