Correcting for selective participation in cohort studies using auxiliary register data without identification of non-participants.
Published 15 January 2020 Selective participation may hamper the validity of population-based cohort studies. The resulting bias can be alleviated by linking auxiliary register data to both the participants and the non-participants of the study, estimating propensity scores for participation and correcting for participation based on these. However, registry holders may not be allowed to disclose s