Table 3 Process evaluation items, indicators, and methods of measurement
Process evaluation items | Indicators | Measurement | |
|---|---|---|---|
Implementation | |||
 Dose | Quantity of the intervention implemented | Number of sessions received Frequency and duration of exercising with the exercise video | Intervention logbook; WeChat record |
 Reach | How well the intervention is received | Percentage of pregnant women who met the inclusion criteria attend this study Percentage of participants who completed the intervention | Intervention logbook; WeChat record |
 Fidelity | Whether the intervention was delivered to participants according to the protocol | If the session was delivered to participants, gestational weeks, begin-time, complete-time; if the session was completed, reasons for participation and declining participation | Intervention logbook; WeChat record; semi-structured interviews |
 Adaptation | Extent to which adaptation across contents is acceptable | Satisfactory rate | Satisfactory questionnaire; Semi-structured interviews |
Mechanism of impact | |||
 Participant responses | Participant responses to and interactions with the intervention | How satisfied are participants with the content, work procedures, and delivery? What is their opinion of the physical activity program’s appropriateness/usefulness, acceptability, feasibility, sustainability? | Satisfactory questionnaire; Semi-structured interviews |
Context | Which factors/circumstances have either facilitated or hindered working with the interventions? | Which factors/circumstances have either facilitated or hindered working with physical activity programs? | Semi-structured interviews. |