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

Table 8

Fidelity measurement time points.

Fidelity measurement time points (, % of total studies)	Study references
End of the intervention (, 29%)	Studies 1, 7, 12, 18, 19, 20, 23–26, 31, 40, 49–52
During the intervention (, 15%)	Studies 9, 11, 34, 36, 38, 44, 48, and 54
Fidelity assessed on an ongoing basis (, 10%)	Studies 3, 35, 42, and 45
Fidelity assessed once during the study (, 15%)	Studies 1, 23–25, 28, 49, 51, and 52