Data collection
Data including the consultation and follow-up survey was self-reported into the WoW website. Data was transported to an Excel file and anonymized. Follow-up surveys were sent via e-mail five weeks after the shipment of medication. If needed, a reminder was sent after another two weeks. Similar to follow-up instruments in clinical settings, the survey consisted of 30 questions which included information on completed treatment, how the pregnancy was confirmed, perceived side-effects, any visits or contacts for medical care, any treatment received, how information was accessed and emotions after the procedure. Although WoW has been active since 2006, we included data from the year 2009 onwards as this was the year WoW changed its data collection system.