Research Appraisals
Evidence-based critical appraisals of the latest medical research, systematically evaluated using Oxford CEBM methodology.
Showing 5 appraisals
Seminars in fetal & neonatal medicine
Intraventricular hemorrhage in preterm infants: A systematic review of risk- and outcome-prediction models
Intraventricular hemorrhage (IVH) is a major complication of prematurity and one of the top causes of mortality and neurodevelopmental impairment. We conducted a systematic review of PubMed, Scopus, and Web of Science (From 1980 to 2025), identifying 40 studies evaluating prediction models (regression and machine learning) for risk of IVH occurrence and short- and long-term outcomes in preterm infants with IVH. Across these published studies, IVH risk prediction models included combinations of perinatal clinical variables, physiologic and hemodynamic indices, and serum biomarkers. Outcome-prediction models likewise varied. IVH grade was commonly included, with varying inclusion of comorbidities and neuroimaging-based injury markers. Most models performed acceptably, with machine-learning models showing better discrimination in larger datasets. However, the generalizability of the models is limited by heterogeneity in predictors, limited sample sizes, and inconsistent timing of predictor measurements. IVH severity remained the most consistent predictor across all outcome-prediction models. Despite promising performance assessments, clinical relevance is limited due to the infrequent reporting of model calibration, internal validation, and external validation. Future research that standardizes predictor definitions, leverages multicenter cohorts, and ensures thorough validation can advance early IVH risk and outcome-prediction models, thereby meaningfully improving clinical relevance and neonatal care.
2 Aug 2026
Read appraisal →Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery
Genetics versus environment in the pathophysiology of sagittal synostosis
PURPOSE: This systematic review aims to provide an updated overview of the relative contribution of germline genetic and environmental factors to the pathophysiology of sagittal craniosynostosis (sCS). METHODS: Using the PubMed database in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, relevant studies addressing genetic and/or environmental determinants of sCS in paediatric patients were systematically reviewed. RESULTS: A total of 1238 records were identified, of which 97 studies met inclusion criteria after full-text review. Overall, 25,877 patients were included, with 11,086 diagnosed with sCS (42.8%). Germline genetic variants potentially associated with craniosynostosis were reported in 251 patients, accounting for 12.6% of genetically tested individuals with sCS. Identified variants were distributed across 125 genes, with recurrent findings in 25 genes. Environmental and perinatal factors were more consistently reported across large population-based and case-control studies. Frequently associated factors included male sex, advanced maternal age, maternal smoking, thyroid dysfunction, fertility treatments, foetal constraint, prematurity, and abnormal birth weight, although effect sizes varied across studies. CONCLUSION: Identifiable germline genetic causes appear to account for only a minority of sCS cases, whereas epidemiological evidence suggests that environmental and perinatal influences may also contribute to disease pathogenesis. Nevertheless, most cases lack identifiable germline mutations in key signalling pathways, and the available evidence does not support either genetic or environmental factors as individually deterministic drivers of disease development. Overall, the evidence synthesized in this review supports a multifactorial model for sCS, in which rare genetic susceptibility and non-genetic influences likely interact in the etiopathogenesis of the condition rather than reflecting a single dominant aetiology. However, heterogeneity across studies, differences in genetic testing methodologies, potential bias in exposure assessment, and the limited availability of integrative analyses restrict definitive conclusions regarding the relative contribution of these factors.
19 July 2026
Read appraisal →BMJ global health
Enhancing malaria-in-pregnancy monitoring: stakeholder experiences and data integration into the BornFyne-PNMS digital platform in Cameroon
Malaria in pregnancy (MiP) is a significant public health concern in high-burden malaria countries and a key predictor of high-risk pregnancies in Cameroon. One of the challenges of the National Malaria Control Programme (NMCP) in Cameroon is to generate reliable, timely, accurate and actionable data to inform decision-making, effective monitoring and planning. Discussions with the NMCP at the Ministry of Public Health (MoPH) identified poor data quality, lack of clear guidelines, manual data processing at the district level and delays in feedback on data as key bottlenecks in effective implementation of malaria control in Cameroon. This paper documents the data gaps for MiP identified by the digital health platform, BornFyne, project team in collaboration with the MoPH. We outlined lessons learnt in identifying and defining MiP-related indicators through stakeholder engagement across various levels, and identifying priority MiP elements for health facility registers for integration into the BornFyne digital platform. These lessons and insights will provide valuable guidance for other countries looking to incorporate malaria-related content into their antenatal care packages and/or to integrate similar content into their digital health platforms, and suggestions for strengthening the WHO digital adaptation kit MiP content.
8 July 2026
Read appraisal →JMIR nursing
WeChat-Based Nursing Interventions in Women's Mobile Health: Systematic Review
BACKGROUND: Mobile health (mHealth) technology offers new approaches to improve women's health by providing personalized monitoring and real-time guidance. As one of the most widely used social media platforms in China, WeChat has shown great potential in mHealth practice, yet systematic evidence on its application in women's health care remains insufficient. OBJECTIVE: This study aims to systematically review WeChat-based nursing interventions in women's mHealth in order to clarify the application status, intervention modalities, target populations, and effectiveness outcomes. METHODS: Searches were conducted in IEEE Xplore, Web of Science, PubMed, Scopus, ACM Digital Library, and Cochrane Central Register of Controlled Trials between January 2011 and December 2024. Two independent reviewers screened studies; extracted data on study design, intervention forms, target diseases, and outcome indicators; and assessed methodological quality. The Cohen κ coefficient was used to evaluate interreviewer agreement. Publication trends, institutional collaborations, author contributions, and research hotspots were analyzed using VOSviewer (Leiden University) and InCites (Clarivate) for bibliometric analysis. RESULTS: A total of 31 eligible studies published from 2014 to 2024 were included. Most studies were randomized controlled trials (n=27). Intervention modalities mainly included WeChat groups (n=22), official accounts (n=18), applets (n=4), and private chats (n=9), mostly used in combination. The top focused health issues were prenatal care (n=5), breast cancer (n=5), gynecological cancer (n=5), and gestational diabetes mellitus (n=4). Six studies adopted multidisciplinary teams. Cohen κ was 0.71, indicating substantial agreement. Publications grew rapidly after 2018, peaking in 2021 and 2024. A total of 40 institutions participated, with Xi'an Jiaotong University having the highest citation impact. Most studies were at high risk of bias due to a nonblinding design. CONCLUSIONS: WeChat-based nursing interventions improve personalized health information access, self-management ability, treatment compliance, and real-time doctor-patient communication for women. This is the first systematic review to evaluate WeChat mHealth interventions in women's health, filling the research gap. Future research should focus on improving methodological quality, exploring cross-cultural adaptability, conducting long-term follow-up, and integrating wearable devices and electronic health records to further optimize WeChat-based women's health services.
7 July 2026
Read appraisal →PloS one
Long-term effects following prenatal cocaine exposure: A systematic review.
Cocaine use represents a global public-health concern, and children's exposure to this substance is receiving growing attention. Despite the importance of this phenomenon, efforts to isolate cocaine-specific long-term effects are affected by the limited availability of human cohorts followed into adulthood and by the influence of environmental factors and co-exposures. Addressing ongoing debates in the literature, this systematic review synthesizes human evidence on long-term outcomes following prenatal cocaine exposure (PCE), from infancy to early adulthood. A comprehensive search of PubMed and Scopus from inception to August 2025 identified 26 eligible studies. Results suggest that across maturational stages, PCE is consistently associated with early developmental effects (including smaller head circumference and motor delays), deficits in visuospatial, language and executive functions, focal neuroimaging alterations (white-matter microstructure and task-related functional recruitment), growth deficits, and elevated externalizing behaviours. However, evidence is characterised by heterogeneity in exposure assessment, frequent prenatal polysubstance exposure, socioeconomic confounding, caregiving instability and small neuroimaging samples. Overall, this review suggests that PCE is linked to a broad spectrum of detrimental effects and that some biological vulnerabilities associated with PCE may persist. Nonetheless, supportive postnatal environments may mitigate developmental disadvantages and promote better trajectories for affected children. These findings underscore the need for integrated public-health and clinical strategies that combine prevention of prenatal substance use with family-focused postnatal supports.
28 June 2026
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