| 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 |
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