Factors associated with nonparticipation and loss to follow-up in bereavement research using data from a cohort of parents with a loss in pregnancy or the neonatal period.

Factors shaping participation in longitudinal cohorts may introduce bias, but there is a lack of research concerning participation patterns in cohorts of bereaved. Our aim was to study this in a longitudinal cohort of parents with a loss in pregnancy or during the neonatal period. Using data from th...

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