Browsing by Author "Chu, Haitao"
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Double-zero-event studies matter: A re-evaluation of physical distancing, face masks, and eye protection for preventing person-to-person transmission of COVID-19 and its policy impact
Mengli, Xiao; Lin, Lifeng; Hodges, James S.; Xu, Chang; Chu, Haitao ( Elsevier , 2021 , Other)In a recent timely systematic review, Chu et al. [1] assessed the effectiveness of face masks, eye protection, and physical distancing for preventing COVID-19. Because the sample sizes are not large, especially in some ... -
Empirical Comparisons of 12 Meta-analysis Methods for Synthesizing Proportions of Binary Outcomes
Lin, Lifeng; Xu, Chang; Chu, Haitao ( Springer , 2021 , Article)Background: Meta-analysis is increasingly used to synthesize proportions (e.g., disease prevalence). It can be implemented with widely used two-step methods or one-step methods, such as generalized linear mixed models ... -
Influence of lack of blinding on the estimation of medication-related harms: a retrospective cohort study of randomized controlled trials.
Xu, Chang; Zhang, Fengying; Doi, Suhail A R; Furuya-Kanamori, Luis; Lin, Lifeng; Chu, Haitao; Yang, Xi; Li, Sheyu; Zorzela, Liliane; Golder, Su; Loke, Yoon; Vohra, Sunita... more authors ... less authors ( Springer Nature , 2024 , Article)Empirical evidence suggests that lack of blinding may be associated with biased estimates of treatment benefit in randomized controlled trials, but the influence on medication-related harms is not well-recognized. We aimed ... -
Laplace approximation, penalized quasi-likelihood, and adaptive Gauss-Hermite quadrature for generalized linear mixed models: Towards meta-analysis of binary outcome with sparse data
Ju, Ke; Lin, Lifeng; Chu, Haitao; Cheng, Liang Liang; Xu, Chang ( BMC , 2020 , Article)© 2020 The Author(s). Background: In meta-analyses of a binary outcome, double zero events in some studies cause a critical methodology problem. The generalized linear mixed model (GLMM) has been proposed as a valid ...