Associations between LBEs and sexual practice and SRH outcomes
In table 3, the associations between LBEs with sexual practice, risky sexual behaviors, and adverse SRH outcomes were analyzed by Poisson and logistic regressions. LBEs were negatively associated with sexual intercourse experience (OR: 0.93, 95% CI: 0.89-0.98), contraception at first sexual behaviors (OR: 0.81, 95% CI: 0.72-0.90), and reproductive health problems (OR: 0.95, 95% CI: 0.91-0.99), but positively associated with unintended pregnancy (OR: 1.51, 95% CI: 1.26-1.82) and STI (OR: 2.11, 95% CI: 1.78-2.49). MPLBEs were less likely to use contraception during their first sexual behaviors (OR: 0.81, 95%CI: 0.70-0.95), and their partners faced a higher risk of unintended pregnancy (OR: 1.59, 95%CI: 0.71-0.98). The prevalence rate of STI was 64% higher in MPLBEs than MPOLBEs (OR: 1.64, 95%CI: 1.27-2.13). Although the LBEs and induced experience were negatively correlated (OR: 0.52, 95%CI: 0.28-0.95), after the gender stratification, the associations between the two variables were not significantly associated (FP [OR: 0.49, 95%CI: 0.20-1.21], MP [OR: 1.59, 95%CI: 1.02-2.09]).
In table 4, associations between LBEs and other predictive variables were further stratified based on the geographic, socioeconomic, and demographic information of participants.
Sexual intercourse experience:
FPLBEs from conservative families or underdeveloped areas were less likely to have sexual intercourse experiences as the OR were 0.89 (95%CI: 0.85-0.96) and 0.85 (95% CI: 0.79-0.92). Regardless of family financial status, LBEs and sexual intercourse were negatively associated in FPLBEs (below median: OR 0.92, 95%CI (0.86—0.99); above median: OR 0.88, 95% CI (0.79—0.98)).
Contraception at first sexual behaviors:
Associations between LBEs and contraception at first sexual behaviors were significant among FP who were from universities located in underdeveloped areas (OR: 0.80, 95%CI: 0.64-0.98), grew up in urban areas (OR: 0.69, 95%CI:0.55-0.87), or did not receive school-based sexual health education (OR: 0.77. 95%CI: 62-0.96). Slightly different from the FP, associations between LBEs and contraception at first sexual behaviors were significant among MP from rural areas (OR: 0.75, 95%CI: 0.61-0.92).
Unintended pregnancy:
In both FP and MP, the OR of LBEs and unintended pregnancy was higher than 1 in family with liberal attitudes toward sexuality (FP: [OR: 2.29, 95% CI: 1.38-3.82]; MP: [OR: 2.00, 95% CI: 1.28-3.11]) universities located at underdeveloped areas(FP: [OR: 1.56, 95% CI: 1.11-2.21]; MP: [OR: 1.96, 95% CI: 1.35-2.85]), hometown in urban areas(FP: [OR: 1.56, 95% CI: 1.07-2.27]; MP: [OR: 2.02, 95% CI: 1.35-3.01]), and family with below-median income(FP: [OR: 1.34, 95% CI: 1.02-1.79]; MP: [OR: 1.60, 95% CI: 1.15-2.23]).
STI:
MP who demonstrated above-average sexual knowledge score had the highest OR (OR: 3.33, 95% CI: 1.57-7.29) between the STI prevalence and LBEs while the MP who grew up in rural areas had the lowest OR (OR: 1.43, 95% CI: 1.01-2.02). Despite the participation of the school-base sexual education, LBEs and STI were positively associated among MP (with school-based sexual education: [OR: 1.67, 95% CI: 1.13-2.46]; without school-based sexual education: [OR: 1.61, 95% CI: 1.13-2.29]). Compared to MP without school-based sexual education, FP had a higher OR between LBEs and STI (OR: 1.84, 95% CI: 1.32-2.55).