Characteristics of the Participants and Dropout Rates
A total of 15,387 participants were assessed for eligibility. Of the 15,387 participants, 14,278 (92.79%) were excluded from the study. The remaining 7.21% (1109/15,387) of participants were randomly assigned to the IG (n=882, 79.53%) and CG (n=227, 20.47%). Ultimately, 10.28% (114/1109) of participants completed the conditions (n=45, 39.5% completed the intervention, and n=69, 60.5% completed the waitlist period; CONSORT (Consolidated Standards of Reporting Trials) flow diagram of the study design.Most participants were from Mexico (110/114, 96.5%). In all, 90.4% (103/114) were women, 8.8% (10/114) were men, and 0.9% (1/114) was a nonbinary person. Two-thirds of the participants (77/114, 67.5%) reported being actively working. Educational attainment was high, with 61.4% (70/114) of participants reporting university degrees, 21.1% (24/114) reporting a master’s degree, 14% (16/114) reporting a high school diploma, 1.8% (2/114) reporting a PhD, and the remaining 2 (1.8%) reporting other educational levels.A total of 39.5% (45/114) of participants received treatment, and 60.5% (69/114) of participants were assigned to the waitlist CG. The sociodemographic characteristics of both groups were similar, with the exception of age (A large number of participants (treatment condition: 576/882, 65.3%; CG condition: 49/69, 71%) dropped out of the intervention before beginning, without completing any of the modules. A considerable dropout rate was observed among the participants in module 1 (112/882, 12.7% of participants from the IG). More details are provided in Detailed dropout rates by participants and conditions.The mean age of the treatment group was 45.7 (SD 10.5) years, with participants’ ages ranging from 22 to 62 years. In contrast, the mean age for the CG was 34.4 (SD 10.4) years, ranging from 21 to 58 years.