Incentive delivery timing and follow-up survey completion in a prospective cohort study of injured children: a randomized experiment comparing prepaid and postpaid incentives
Multiple imputation validation study: addressing unmeasured survey data in a longitudinal design
Overcoming the problems caused by collinearity in mixed-effects logistic model: determining the contribution of various types of violence on depression in pregnant women
The unintended consequences of COVID-19 mitigation measures matter: practical guidance for investigating them