2–2. Data
For both the treatment and control groups, we used responses to self-administered surveys conducted before the start of the program (the end of October 2020; the baseline survey) and after implementation in period 1 (the end of January 2021; the follow-up survey).To measure the effect of the intervention, only the sample that responded to both the baseline and follow-up surveys was used in the following analysis. Because there were several participants who left the program or did not return the questionnaire, the final sample of participants who completed the follow-up survey included 145 observations in the treatment group and 57 observations in the control group (see 