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Table 1 Characteristics of the full sample and those who had and never had sex

From: Multiple sex partner behavior in female undergraduate students in China: A multi-campus survey

Demographic Variables    
Variables Full sample
(n = 4,769)
Ever had sex
(n = 863)
Test of signif
T-test or OR (95% CI)
Mean agea 20.35(SD = 1.49) 20.99(SD = 1.40) 14.10d
Nationality Han (vs. minority) 4,217 (88.43) 779 (90.27) 0.79(0.62–1.01)
Home location    
   Eastern coastal regions 561 (11.76) 107 (12.40) 1.00(reference)
   Central areas 3,548 (74.40) 662 (76.71) 0.97(0.78–1.22)
   Western areas 660 (13.8) 94 (10.89) 0.71(0.52–0.95)c
Parents' economic status    
   Poor 2,142 (44.92) 212 (24.57) 1.00(reference)
   Average 2,158 (45.25) 455 (52.72) 2.43(2.04–2.90)d
   Rich 469 (9.83) 196 (22.71) 6.54(5.18–8.24)d
Family, peer, and work variables    
Parents' disciplinary style    
   Strict 795 (16.67) 195 (22.60) 1.00(reference)
   Average 2,327 (48.79) 434 (50.29) 0.71(0.58–0.86)d
   Relaxed 1,647 (34.54) 234 (27.11) 0.51(0.41–0.63)d
Only one child(yes)b 1,954(40.97) 468(54.23) 1.93(1.66–2.24)d
Parents divorced(yes)b 264(5.54) 86(9.97) 2.32(1.77–3.03)d
Parents disapproving of premarital sex (yes)b 2,215 (46.45) 416 (48.20) 1.09(0.94–1.26)
Middle school close classmates and friends disapproving of premarital sex (yes)b 2,796(58.63) 472(54.69) 0.82(0.71–0.95)c
Middle school close friends falling in love (yes)b 1,338(28.06) 366(42.41) 2.22(1.91–2.59)d
Current close friends living with boyfriend (yes)b 397 (8.32) 224 (25.96) 7.56(6.10–9.38)d
Work at place of entertainment (yes)b 308 (6.46) 138 (15.99) 4.18(3.30–5.31)d
Current student variables    
Major    
   Literature and history 1,862 (39.04) 323 (37.43) 1.00(reference)
   Science and technology 1,167 (24.47) 157 (18.19) 0.74(0.60–0.91)d
   Medical science 985 (20.65) 118 (13.67) 0.65(0.52–0.81)d
   Art 755 (15.83) 265 (30.71) 2.58(2.13–3.12)d
Grade    
   Freshman 1,373 (28.79) 103 (11.94) 1.00(reference)
   Sophomore 1,195 (25.06) 157 (18.19) 1.87(1.44–2.42)d
   Junior 1,309 (27.45) 361 (41.83) 4.70(3.71–5.94)d
   Senior 892 (18.70) 242 (28.04) 4.59(3.58–5.89)d
Academic performance    
   Excellent 1,243 (26.06) 210 (24.33) 1.00(reference)
   Medium 3,018 (63.28) 546 (63.27) 1.09(0.91–1.29)
   Poor 508 (10.65) 107 (12.40) 1.31(1.01–1.70)c
Feelings in college    
   Generally happy(yes)b 1,324(27.76) 236(27.35) 0.98(0.83–1.15)
   Average or ordinary(yes)b 1,523(31.94) 264(30.59) 0.93(0.79–1.09)
   Confused(yes)b 2,292(48.06) 437(50.64) 1.13(0.98–1.31)
   Depressed(yes)b 932(19.54) 195(22.60) 1.26(1.05–1.50)c
   Anxious(yes)b 591(12.39) 118(13.67) 1.15(0.93–1.43)
   Pressured(yes)b 1,328(27.85) 235(27.23) 0.96(0.82–1.14)
Score in sex-related knowledge a 42.58(SD = 12.99) 51.01(SD = 11.68) 22.12d
Approve/accept premarital sex (yes)b 2,837 (59.49) 790 (91.54) 9.83(7.67–12.59)d
Approve/accept multiple sex partners (yes)b 547 (11.47) 164 (19.00) 2.16(1.77–2.64)d
  1. a Independent-samples t-test. b Dichotomous variables with 0 (condition absent) as reference group. c p < 0.05 d p < 0.01