life satisfaction, friendship support and self-esteem

A total of 882 participants fully participated in all survey sessions of this study. Among the 882 surveyed students, there were 462 male students, accounting for 52.4%, and 420 female students, accounting for 47.6%. In this study, the average age of participants at the time of the first test was (12.20 ± 0.49) years old. After one year of follow-up survey, the sample attrition rate ranged from 6% to 17%, with the main reasons for attrition including students transferring schools, taking leave for various reasons, and refusing to continue participating in the questionnaire survey.