Table 2.

Fidelity strategies previously used by participants

Fidelity strategies	Number (%)
Assessment strategies
Provider self-report record	115 (63.5)
Direct observation	106 (58.6)
Participant interview	106 (58.6)
Provider interview	81 (44.8)
Participant self-report record	73 (40.3)
Audio recording	67 (37)
Participant follow up visits	57 (31.5)
Exit questionnaires	56 (30.9)
Video recording	27 (14.9)
None	1 (0.6)
Other	8 (4.4)
Simulated patients	1 (0.6)
Audit or chart review	2 (1.1)
Web analytics (digital interventions)	3 (1.7)
Blood tests	1 (0.6)
Use of validated fidelity measures	1 (0.6)
Enhancement strategies
Training manual	148 (81.3)
Treatment manual/scripted curriculum/standard operating procedures	118 (64.8)
Reminder checklists	137 (75.3)
Protocol review group	84 (46.2)
None	4 (2.2)
Other	7 (3.8)
Ongoing support/supervision for providers	2 (1.1)
Observation/audit of providers delivering intervention	3 (1.6)
Colour coding materials for providers	1 (0.5)
Interim analysis	1 (0.5)