How Has Intervention Fidelity Been Assessed in Smoking Cessation Interventions? A Systematic Review

Table 7

Fidelity assessment.

Group where fidelity was assessed (, % of total studies)	Study references
Fidelity assessed in the intervention group only (, 65%)	Studies 2, 3, 5–9, 11–15, 18, 19, 21, 23–28, 30, 34–37, 39, 41–44, 46–48, 50, 54, and 55
Fidelity assessed in both the intervention and control groups (, 29%)	Studies 12, 16, 17, 32, 38, 45, and 53
Studies that specified the proportion of the sample that fidelity was assessed in (, 35%); This varied from 10% (, 7%) to 100% of the sample (, 22%) (average 55%).	Studies 2, 3, 5, 12, 16, 19, 23, 24, 34–37, 39, 42, 44, 45, 47, 50, and 53