Table 4 Predictors of ever having sexual intercourse in female undergraduate students (n = 4,769)
From: Multiple sex partner behavior in female undergraduate students in China: A multi-campus survey
Demographic Variables | Â | Â | Â | Â |
|---|---|---|---|---|
Explanatory variables | Empty Model | Model 1 Demographics OR (95% CI) | Model 2 Demos + influ OR (95% CI) | Model 3 All factors OR (95% CI) |
Age (continuous) |  | 1.52(1.43–1.61)d | 1.46(1.38–1.55)e | 1.27(1.16–1.39)e |
Home locationa | Â | Â | Â | Â |
   Eastern coastal regions |  | 1.00 | 1.00 | 1.00 |
   Central areas |  | 1.33(1.03–1.72)e | 1.25(0.96–1.63) | 1.35(1.02–1.80)e |
   Western areas |  | 1.18(0.85–1.64) | 1.03(0.73–1.45) | 0.95(0.66–1.36) |
Parents' economic statusa | Â | Â | Â | Â |
   Poor |  | 1.00 | 1.00 | 1.00 |
   Average |  | 2.15(1.77–2.60)f | 1.92(1.57–2.34)f | 1.48(1.19–1.83)f |
   Rich |  | 4.93(3.77–6.45)f | 3.79(2.86–5.01)f | 2.76(2.03–3.75)f |
Family, peer, and work influences | Â | Â | Â | Â |
Parents' disciplinary stylea | Â | Â | Â | Â |
   Strict |  |  | 1.00 | 1.00 |
   Average |  |  | 0.76(0.61–0.95)e | 0.75(0.59–0.94)e |
   Relaxed |  |  | 0.65(0.51–0.82)f | 0.58(0.45–0.75)f |
Only one child(yes)b |  |  | 1.16(0.97–1.39) | 0.89(0.73–1.08) |
Parents divorced(yes)b |  |  | 1.91(1.40–2.60)f | 1.64(1.17–2.31)f |
Middle-school close classmates and friends disapproving of premarital sex (yes)b |  |  | 0.91(0.76–1.08) | 1.01(0.83–1.21) |
Middle-school close friends falling in love (yes)b |  |  | 1.50(1.25–1.79)f | 1.10(0.90–1.33) |
Current close friends living with boyfriend (yes) b |  |  | 3.40(2.66–4.35)f | 2.48(1.90–3.24)f |
Work at place of entertainment (yes)b |  |  | 2.37(1.78–3.15)f | 2.11(1.54–2.88)f |
Current student factors | Â | Â | Â | Â |
Majora | Â | Â | Â | Â |
   Literature and history |  |  |  | 1.00 |
   Science and technology |  |  |  | 1.32(1.03–1.81)e |
   Medical science |  |  |  | 0.32(0.23–0.45)f |
   Art |  |  |  | 1.41(0.97–2.05) |
Year in school (continuous) |  |  |  | 1.12(0.98–1.27) |
Academic performancea | Â | Â | Â | Â |
   Excellent |  |  |  | 1.00 |
   Medium |  |  |  | 1.37(1.11–1.69)f |
   Poor |  |  |  | 1.92(1.39–2.64)f |
Feelings depressed in college(yes) b |  |  |  | 1.02(0.97–1.08) |
Score in sex-related knowledge (continuous) b |  |  |  | 1.07(1.06–1.08)e |
Approve/accept premarital sex (yes)b |  |  |  | 5.00(3.83–6.52)f |
Approve/accept multiple sex partners (yes)b |  |  |  | 0.97(0.76–1.24) |
Between university variance(SE c ) | 0.429(0.175) | 0.157(0.074) | 0.045(0.029) | 0.017(0.018) |
Explained variance d (%) | Â | 63.40 | 89.51 | 96.04 |