Table 2.
Timeline for measurement of primary and secondary outcome variables
| Base | 6 m | 12 m | 18 m | 24 m | |
|---|---|---|---|---|---|
| Primary Outcomes | |||||
| Adult BMI and child zBMI based on height and weight15 | A+C | C | A+C | C | A+C |
| Secondary Outcomes | |||||
| Medical history survey (developed by research team) | A+C | A+C | A+C | ||
| Waist circumference | A+C | C | A+C | C | A+C |
| Diet screeners: based on NHANES 2009–10 for adults35 and on the 2010 National Youth Physical Activity and Nutrition Survey for children36 | A+C | A+C | A+C | ||
| 24-hour dietary recall | A+C | A+C | A+C | ||
| Screen time survey (developed by research team) | A+C | A+C | A+C | ||
| Physical activity surveys: Godin Leisure-Time Exercise Questionnaire for adults37 and Netherlands Physical Activity Questionnaire for children38, 39 | A+C | A+C | A+C | ||
| Sleep survey based on Child Sleep Habits Questionnaire40, 41 and the Pittsburg Sleep Quality Index42 | A+C | A+C | A+C | ||
| Family activity and environment with Family Nutrition and Physical Activity Survey43 with 2 validated questions on food security from the USDA Household Food Security Survey44 | A | A | A | A | A |
| Psychosocial measures: Physical Activity and Nutrition Self-Efficacy Scale45, Perceived Stress Scale (PSS)46–48, SF-12 | A | A | A | ||
| Social network use (developed by research team) | A | A | A | ||
| Cultural Identity: A 6-item measure of acculturation49 | A | ||||
| Control Behaviors | |||||
| Safety survey (developed by the research team) | A | A | A |
A, adult; C, child; m, months.