Linsah Coulanges, Heather J Bachman, Melissa Libertus, Elizabeth Votruba-Drzal
Examining Profiles of U.S. Children's Screen Time and Associations with Academic Skills
Journal of children and media
longitudinal cohort studies strive high participant retention although attrition common understanding determinants attrition important inform develop targeted strategies improve study participation aimed identify factors associated research participation large childrens primary care cohort study longitudinal cohort study 2008 2020 children participated applied research group kids target kids included target kids large primary care practicebased pediatric research network canada ongoing data collection wellchild visits several sociodemographic health study design factors examined associations research participation primary outcome attendance eligible research followup visits secondary outcome time withdrawal target kids study generalized linear mixed effects models cox proportional hazard models fitted engaged parent partners stages study total 10412 children 62655 total eligible research followup visits included mean age enrolment 22 months 52 male 52 mothers european ethnicity 684 participants attended least 1 research followup visit since 2008 64 participants submitted withdrawal request key factors associated research participation included child age ethnicity maternal age maternal education level family income parental employment child diagnosis chronic health conditions certain study sites missingness questionnaire data socioeconomic status demographic factors chronic conditions missingness questionnaire data associated research participation large primary care practicebased cohort study children results analysis input parent partners suggested retention strategies could include continued parent engagement creating brand identity communication tools using multiple languages avoiding redundancy questionnaires