Yating Xing

Jul 13, 2023 | journals.plos.org | Yihao Zhou |Xu Dong |Ruoyu Wang |Yating Xing

Study design and risk of biasAll studies had various aspects of bias risk because of methodological deficiencies (Fig 2). Four studies used randomized digital tables [13–15,25], five studies randomized in order of visited [12,16,19,21,28], two studies randomized according to lots [18,24], and seven studies were evaluated as unclear risk due to absence details of random sequence generation. All studies were considered unclear risk as lack of allocation concealment process.