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Observational studies

Optimal Caliper Width for Propensity Score Matching of Three Treatment Groups: A Monte Carlo Study

Yongji Wang, Hongwei Cai, [ ... ], Jielai Xia

The External Validity of Randomized Controlled Trials of Hypertension within China: from the Perspective of Sample Representation

Xin Zhang, Yuxia Wu, [ ... ], Le Peng

Transorbital Sonographic Evaluation of Normal Optic Nerve Sheath Diameter in Healthy Volunteers in Bangladesh

Rapeephan R. Maude, Md Amir Hossain, [ ... ], Richard J. Maude

Publication Bias in Recent Meta-Analyses

Michal Kicinski

Insulin Therapy and Risk of Prostate Cancer: a Systematic Review and Meta-Analysis of Observational Studies

Yan-bo Chen, Qi Chen, Zhong Wang, Juan Zhou

The Magnitude of Tobacco Smoking-Betel Quid Chewing-Alcohol Drinking Interaction Effect on Oral Cancer in South-East Asia. A Meta-Analysis of Observational Studies

Stefano Petti, Mohd Masood, Crispian Scully

The Risk of Metabolic Syndrome in Patients with Rheumatoid Arthritis: A Meta-Analysis of Observational Studies

Jianming Zhang, Lingyu Fu, [ ... ], Yao Zhang

Are Patient Views about Antibiotics Related to Clinician Perceptions, Management and Outcome? A Multi-Country Study in Outpatients with Acute Cough

Samuel Coenen, Nick Francis, [ ... ], on behalf of the GRACE Project Group

Informing Potential Participants about Research: Observational Study with an Embedded Randomized Controlled Trial

Helen M. Kirkby, Melanie Calvert, Richard J. McManus, Heather Draper

Adverse Events Related to Emergency Department Care: A Systematic Review

Antonia S. Stang, Aireen S. Wingert, Lisa Hartling, Amy C. Plint

Free HIV Antiretroviral Therapy Enhances Adherence among Individuals on Stable Treatment: Implications for Potential Shortfalls in Free Antiretroviral Therapy

Jayne Byakika-Tusiime, Eric C. Polley, Jessica H. Oyugi, David R. Bangsberg

Prevention of Chronic Kidney Disease and Subsequent Effect on Mortality: A Systematic Review and Meta-Analysis

Usman A. Khan, Amit X. Garg, Chirag R. Parikh, Steven G. Coca

Impact of STROBE Statement Publication on Quality of Observational Study Reporting: Interrupted Time Series versus Before-After Analysis

Sylvie Bastuji-Garin, Emilie Sbidian, [ ... ], on behalf of the European Dermatology Network (EDEN)

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