Table 1.
Outcome measures for each aim and the assessment timing schedule
| Measures | Pre | Post | 6 M | 18 M | Aim | Description |
|---|---|---|---|---|---|---|
| Eligibility Screener | X | SA2 | SSB screener, demographics, subjective health literacy,76–78 and access to and use of Internet and text messaging | |||
| Beverage Intake, BEV-Q 15 | X | X | X | X | PA, SA1 | Frequency and portion sizes of 15 beverage categories over the past month, including 5 SSB specific categories (e.g., regular soft drinks, sweetened juice drinks, tea with sugar, coffee with sugar, energy drinks)62–64 |
| 24-hour Dietary Recalls | X | X | X | X | SA1 | Two unannounced 24-hour dietary recalls (one weekend and one weekday) using state-of-the-art Nutrition Data System for Research (NDSR) software and multiple pass methods79 |
| Weight | X | X | X | X | SA1 | Assessed via study provided cellular/WIFI enabled in-home digital scale |
| Height | X | SA1 | Self-reported | |||
| QOL | X | X | X | X | SA1 | Assessed using 4-item Centers for Disease Control Healthy Days core questions80 |
| SSB TPB | X | X | X | X | SA1 | SSB-related TPB with 4 subscales: attitudes, subjective norms, perceived behavioral control, and behavioral intentions13 |
| SSB Media Literacy | X | X | X | X | SA1 | Perceptions of SSB-related media and advertisements with 3 subscales: authors and audience, messages and meanings, and representation and reality81 |
| Health Literacy | X | X | X | X | SA1 | Assessed using the Newest Vital Sign, an objective health literacy & numeracy, based off 6 questions from nutrition facts panel82 |
| eHealth Literacy | X | X | X | X | Assessed using the eHealth Literacy Scale (eHEALS)83 | |
| SSB Home Environment | X | X | X | X | SA1 | Home availability frequency of 15 beverage categories from the BEVQ-15 (modeled from home food availability measures)84–86 |
| Other Health Habits | X | X | X | X | SA1 | Weighing frequency, weight perceptions,87 and weight and SSB avoidance adapted from the Information Avoidance Scale88,89; Physical activity using Stanford Leisure-Time Activity Categorical Item (L-Cat)90–92; Sleep quality using the Pittsburgh Sleep Quality Index (PSQI)93; Tobacco history87 |
| Health History, Medication, & Health care access | X | X | X | X | SA1 | History of chronic disease and medication use; Health access to care variables such as: health insurance, unmet health needs, usual source health care, routine check-up, delayed or missed care due to cost87 |
Pre = baseline (pre-intervention); Post = week 9 (post-intervention); 6 M = 6-months post-intervention; 18 M = 18-months post-intervention
PA = Primary Aim; SA = Secondary Aim; QOL = quality of life; SSB = sugar-sweetened beverages; TPB = Theory of Planned Behavior