Table 2 Summary of outcomes and measures used in the Get Healthy, Stay Healthy trial
Primary outcomes | GHS-comparable tools | Additional tools |
|---|---|---|
Moderate-vigorous physical activity (MVPA) | ● 3-item physical activity assessment tool [51] capturing walking, moderate and vigorous activity (via CATI) | ● Accelerometer (Actigraph GT1M, 10s epoch) capturing duration and frequency of MVPA |
Dietary behaviours | ● Two stand-alone items [56] on servings of fruit and vegetables per day (via CATI) | ● Fat & Fibre Behaviour Questionnaire [58] via CATI (Total Index (1 to 5)) |
Body weight and waist circumference | ● Self-reported (via CATI) | |
Secondary outcomes | GHSH-specific tools | |
Feasibility indicators | ● Number and type of text messages sent | |
● Number and duration of tailoring interviews completed | ||
● Number of prompted and unprompted text message replies from participants | ||
Acceptability indicators | ● Recall of number of text messages received | |
● Treatment of text messages on receipt | ||
● Categorical satisfaction ratings | ||
● Qualitative feedback on intervention | ||
Mediators | ||
● Satisfaction with perceived outcomes: MVPA and diet [59] | ||
● Self-regulation: MVPA and diet [65] | ||
● Social support: MVPA and diet [68] | ||
● Perceived environmental opportunity: MVPA [69]; diet [72, 73] | ||
Moderators | ● Demographics (e.g. age, education) | |
● Health status (e.g. chronic diseases, need for medical clearance before commencing GHS) | ||
● Behavioural and anthropometric changes during initial GHS |