Demographic and Operational Factors Predicting Study Completion in a Multisite Case-Control Study of Preschool Children.
Bradley CB, Browne EN, Alexander AA, Collins J, Dahm JL, DiGuiseppi CG, Levy SE, Moody EJ, Schieve LA, Windham GC, Young L, Daniels JL. Demographic and Operational Factors Predicting Study Completion in a Multisite Case-Control Study of Preschool Children. Am J Epidemiol. 2018 03 01; 187(3):592-603.