Reasons for unsuccessful recruitment of children with atopic dermatitis in primary care in the Netherlands to a cohort study with an embedded pragmatic, randomised controlled open-label trial: a survey.

The main reason why cohort participants did not take part in the trial was that they did not contact their GPs when they experienced an AD flare-up. Furthermore, the majority of patients who contacted their GPs did not match the inclusion criteria of the trial. We expect that the lessons learnt from this study will be useful when developing future studies of children with AD in primary care.