2.4.3. Process data
Data regarding the intervention process were collected during the intervention. Dose of received intervention was monitored as the number of sessions that the parents attended which was noted by the group leaders. Fidelity to the intervention delivery as performed by group leaders was monitored in two manners: group leader-report in a log and researcher-coding of recorded intervention sessions. The logs were developed by the researchers and filled in by the group leaders after each session. The log included information about whether central themes were covered during the session in accordance with the programme manual, the length of the sessions, and attendance of group leaders. In addition, all sessions were audio-recorded and a random selection of 31 out of the total of 45 recordings (70%) were coded for additional measures of fidelity of intervention delivery using the Fidelity of Implementation Rating System (FIMP) [