Participation weighting based on sociodemographic register data improved external validity in a population-based cohort study
Disease prevalence proportions were generally underestimated in the absence of IPPW but became markedly closer to population values after IPPW using sociodemographic variables. We found limited evidence of selective participation bias in association estimates, but IPPW improved external validity when bias was present. New publication in Journal of Clinical Epidemiology
