References
CONSORT flow diagram for enrollment.Child Beverage Consumption at Baseline, 3 and 6 months of Follow-up Parental Beverage Consumption at Baseline, 3 and 6 months of Follow-up Baseline characteristics of participating families in the “Ready, Set, Gulp!” pilot trial.a—Determined by parental self-report using pre-randomization telephone survey; b—based on date of birth in the electronic health record; c—mobile device proficiency score (as detailed in methods section), range of 0–40 points.Overall intervention feedback from parents participating in exit survey.a—Based on telephone-based exit survey among 24 intervention group parents. Parents were asked to rate the overall helpfulness of each intervention component on a 1 to 5 scale, with 1 being the worst and 5 the best, for changing their family’s beverage choice behaviors.Differences for change in beverage intake at 3 and 6 months of follow-up, comparing intervention to control participants.a—Based on responses to Bev-Q-15 questionnaire; b—comparing intervention to control group participants, in constrained linear mixed models accounting for visit and arm by visit interaction; c—frequency in number of times consumed per day; d—volume in ounces per day.Knowledge, attitude, and beliefs of parental participants at baseline and 6 months of follow-up—descriptive results and comparison of change between groups with constrained linear models.a—For knowledge items, individual items are not shown, but rather total knowledge scores across several domains: identifying beverage types correctly (e.g., water, sugar-sweetened beverage, or 100% fruit juice), familiarity with child beverage intake guidelines, identification of health conditions associated with sugar consumption, and total knowledge correct. For attitude and belief items, these are presented as individual items. The table includes only those individual items for which a statistically significant difference was observed between groups; b—comparing intervention to control group participants, in constrained linear mixed models accounting for visit and arm by visit interaction.