Procedures
anxiety
MAY
In May of each wave, after the typical last frost in Denver and Aurora, participants randomly assigned to the intervention gardening group were provided a standard community garden plot (average size of 10 mHealth surveys, including perceived measures of stress and anxiety, accelerometry, and dietary interviews, were administered to all participants at baseline before the gardening season and before random allocation (April to early June, timepoint 1 [T1]), during autumn harvest (ie, end of August to October; timepoint 2 [T2]), and during the winter (ie, January to March; after the intervention (timepoint 3 [T3]). A retention incentive (US$25 at T1, $50 at T2, and $75 at T3) was offered to all participants who attended each study assessment.Health visits were done at T1, T2, and T3 at the central offices of DUG in northeast Denver. Participants completed the health visit with staff from whom allocated assignment was concealed. The participants completed 1·5 h of assessments, including the health survey, anthropometric measurements (height, bodyweight, and waist circumference), and the placement of the thigh-mounted accelerometer. Dietary assessments, via telephone, were completed on three randomly selected days by registered dieticians after the in-person health visit. Details of the health visits are reported elsewhere.We collected demographic variables, including age, sex, self-identified ethnicity, primary language, house hold income, educational attainment, years of previous gardening experience, and smoking status, via survey at T1. Social desirability bias was measured using the short form of the Marlowe-Crowne Social Desirability Scale.