title: Postrandomization Confounding Challenges the Applicability of Randomized Clinical Trials in Comparative Effectiveness Research.
authors.affiliation: Center for Clinical Epidemiology and Evidence-based Medicine, Beijing Children's Hospital, Capital Medical University, Beijing 100045; Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China.
authors.forename: Ya-Guang
authors.initials: YG
authors.lastname: Peng
authors.affiliation: Center for Clinical Epidemiology and Evidence-based Medicine, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China.
authors.forename: Xiao-Lu
authors.initials: XL
authors.lastname: Nie
authors.affiliation: Center for Medical Safety and Risk Administration, National Institute of Hospital Administration, Beijing 100091, China.
authors.forename: Jing-Jing
authors.initials: JJ
authors.lastname: Feng
authors.affiliation: Center for Clinical Epidemiology and Evidence-based Medicine, Beijing Children's Hospital, Capital Medical University, Beijing 100045; Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China.
authors.forename: Xiao-Xia
authors.initials: XX
authors.lastname: Peng
mesh_terms: D057186:Comparative Effectiveness Research / Q000379:methods*; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D012107:Research Design