Results
allergic reaction, anxiety
ADVERSE EVENT, ALLERGIC REACTION
Between Jan 1, 2017, and June 15, 2019, 493 individuals were screened, of whom 291 (59%) completed baseline measurements and were randomly assigned to either a garden plot (intervention group; n=145) or the waiting list (control group; n=146; 36 (25%) of 145 participants in the intervention group and 27 (18%) of 146 in the control group were lost to follow-up. During the study, one (1%) participant in the intervention group had an intervention-attributable adverse event: an allergic reaction in the garden. 13 (9%) of 145 participants assigned to the intervention decided not to garden after randomisation and before gardening began and were lost to follow-up after contributing some data at T1. Four (3%) of 146 participants in the control group refused to remain on the waiting list and began to garden; two (50%) remained in the study and contributed data during follow-up, and two (50%) left the study after T1 and did not contribute subsequent data. All participant data were analysed as randomised.Participants were selected from waiting lists for 37 gardens, and there was a different waiting list for each garden for each year, yielding 65 waiting lists. The mean number of participants per garden waiting list was 4·5 (SD 1·9; range 2–12). The mean number of participants randomly assigned to a garden from each waiting list was 2·2 (SD 1·0), with 2·2 (1·0) randomly assigned to the control group. Mean age of participants was 41·5 years (SD 13·5), 238 (82%) of 291 were female, 52 (18%) were male, 99 (34%) were Hispanic, and 18 (13%) of 141 who provided data reported Spanish to be their first language (The time-by-intervention interaction was significant for fibre intake (p=0·034; We found a significant time-by-intervention effect for moderate-to-vigorous physical activity (p=0·012; Participants in the intervention group showed greater reductions than the control group in both perceived stress and anxiety between T1 and T2 (