Appendix A Numbers of selected participants Category Number Total number of service user contact details supplied by service managers 80 Total numbers called including no answer, no response or incorrect number 40 Total where screening call was carried out 25 Total agreeing to be interviewed 11* Total dropping out after initially agreeing 2 Total interviewed 9 *Four participants were not followed up due to being screened out by selection criteria (n=1) or numbers for study/site already achieved (n=3). 36