Vale+ Tu Salud: Corner-Based Randomized Trial to Test a Latino Day Laborer Program Adapted to Prevent COVID-19

Participants were asked seven items measuring how often they had worn a mask in different situations (e.g. while at the corner) in the last 30 days (baseline) or since their baseline survey (one month post test). Responses were recorded as 1 = Never; 2 = Sometimes; 3 = Many Times; 4 = All the Time. Participants could refuse to answer any item or respond that the particular item did not apply to them (for example., they do not wear a mask on public transport because they do not take public transport) . These responses were treated as missing.

Mask Use score was computed as the mean score of the items with a non-missing response, and mean mask use total score could range from 1 to 4. Change in mean mask use score is reported, and change score was computed by subtracting the baseline score from the post test score, with a negative change score indicating a decrease in mask use.

Participants were asked six items measuring how often they had practiced Social Distancing in different situations (e.g. while at the worksite) in the last 30 days (baseline) or since their baseline survey (one month post test). Responses were recorded as 1 = Never; 2 = Sometimes; 3 = Many Times; 4 = All the Time. Participants could refuse to answer any item or respond that the particular item did not apply to them. These responses were treated as missing

Social Distancing score was computed as the mean score of the items with a non-missing response, and mean mask use total score could range from 1 to 4. Change in mean mask use score is reported and was computed by subtracting the baseline score from the post test score, with a negative change score indicating a decrease in social distancing.