3.2.2. Self-rated adherence to intervention delivery regarding core activities
Of the seven intervention groups that reported on fidelity using paper logs, all seven completed the 10 FOCS sessions and spent an average of 125 (SD: 18) minutes on each session. Of the 34 core activities in FOCS (two-four per session), 25 (74%) were completed according to the manual or with one of the seven groups deviating partly from the manual, and 9 (26%) sessions where two to four of the groups deviated partly from the manual. On four occasions, a core activity was not delivered at all (different activities by different prisons). When activities were only partly completed, they were instead given as home assignments to the participants at times. The majority of the group sessions were conducted by the original two group leaders, but in two groups, an alternative constellation, where one group leader was substituted in a session, performed the FOCS sessions on nine occasions.