Epidemiology

Association between body composition and weight retention from early pregnancy to 42 days postpartum: a retrospective cohort study
Yan Li, Jiaying Yuan, Kui Lan, Yang Li, Xia Li, Bin Zhao

BMJ Open May 2025, 15 (5) e092439; DOI: 10.1136/bmjopen-2024-092439
Telemedicine-supported hospital-at-home for acutely admitted patients at Nordsjaellands Hospital, Denmark: a study protocol for a randomised controlled trial
Maria Normand Larsen, Tatjana Sandreva Dreisig, Maja Kjaer Rasmussen, Maria Lund Christensen, Daniel Bjerregaard, Charlotte Demuth von Sydow, Thyge Lynghøj Nielsen, Thea Fischer

BMJ Open May 2025, 15 (5) e098287; DOI: 10.1136/bmjopen-2024-098287
Study protocol for a descriptive analysis of non-invasive prenatal testing uptake and performance in singleton and twin pregnancies using Ontario birth registry data
Erin Collins, Bounhome Soukkhaphone, Kara Bellai-Dussault, Lynn Meng, Mahin Ahmadi Pishkuhi, Michele Rubini, Shelley Dougan, Julian Little

BMJ Open May 2025, 15 (5) e095318; DOI: 10.1136/bmjopen-2024-095318
Association between sociodemographic factors and alcohol consumption among adults aged 18–69 years in Kazakhstan: a cross-sectional study
Anel Ibrayeva, Marat Shoranov, Mirzakarim Alchinbayev, Bakyt Ramazanova, Shynar Tanabayeva, Ildar Fakhradiyev

BMJ Open May 2025, 15 (5) e094508; DOI: 10.1136/bmjopen-2024-094508
Safety and utilisation of AZD1222 (ChAdOx1 nCoV-19) COVID-19 vaccine: a UK post-authorisation active surveillance study
Alison Evans, Debabrata Roy, Miranda Davies, Sandeep Dhanda, Denise Morris, Taylor Aurelius, Samantha Lane, Catherine Fry, Saad Shakir

BMJ Open May 2025, 15 (5) e093366; DOI: 10.1136/bmjopen-2024-093366
Use of prescription opioids and other psychotropic drugs during pregnancy and their impact on the mother and developing child: protocol for a cohort study using linked administrative data from Manitoba and British Columbia, Canada
Deepa Singal, Lindsey Dahl, Marni Brownell, Colin Dormuth, James M Bolton, Jennifer E Enns, Ana Hanlon-Dearman, Alan Katz, Laurence Y Katz, Lauren E Kelly, Christine Leong, Kimberlyn McGrail, Nathan C Nickel, Chelsea Ruth, Matthew Dahl, Jason Kim, Dan Chateau

BMJ Open May 2025, 15 (5) e097657; DOI: 10.1136/bmjopen-2024-097657
Self-reported outcomes following lower extremity, carotid and aortic artery disease: protocol for the Danish Vascular (DanVasc) survey
Marie Dahl, Jes Sanddal Lindholt, Jacob Budtz-Lilly, Jonas Peter Eiberg, Kim Christian Houlind, Christian Nikolaj Petersen, Saeid Shahidi, Britt Borregaard

BMJ Open May 2025, 15 (5) e092479; DOI: 10.1136/bmjopen-2024-092479
Association of hyperuricaemia and hyperglycaemia with risk of in-hospital mortality in acute aortic dissection: a multicentre cohort study in the Han Chinese population
Qu Zhao, Wenhua Wang, Abudunaibi Balati, Baoquan Zhang, Chunwen Li, Suping Guo, Dan Yu, Peng Chen

BMJ Open Apr 2025, 15 (4) e094857; DOI: 10.1136/bmjopen-2024-094857
Analysis of the disease burden of malignancies in the female reproductive system in China from 1990 to 2019: an age-period-cohort study and joinpoint analysis
Jiayi Li, Xinyu Zhao, Xiaoman Li, Kena Lin, Zhiwen Zeng, Zule Ning, Qinxian Liu, Huanwen Tang, Jinlin Du

BMJ Open Apr 2025, 15 (4) e081511; DOI: 10.1136/bmjopen-2023-081511
Sustainability of health system strengthening interventions implemented at primary healthcare level: a scoping review
Altiona Muho, Curdin Brugger, Talia Salzmann, Kaspar Wyss, Peter Steinmann

BMJ Open Apr 2025, 15 (4) e095516; DOI: 10.1136/bmjopen-2024-095516

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