Table 3 Factors for unintended pregnancy among graduate students active in premarital sex
Factors | Male students (n=1831) | Female students (n=1059) | ||||
|---|---|---|---|---|---|---|
Total n (%) | IOPan (%) | CORb(95% CI) | Total n (%) | IOPan (%) | CORb(95% CI) | |
Educational levels | ||||||
Master candidate | 1467(80.1) | 296(20.2) | 1 | 885(83.6) | 148(16.7) | 1 |
Doctoral candidate | 364(19.9) | 77(21.2) | 1.06(0.80,1.41) | 174(16.4) | 40(23.0) | 1.49(1.01,2.22) |
Discipline | ||||||
nonmedical | 1434(78.3) | 299(20.9) | 1 | 818(77.2) | 137(16.7) | 1 |
medical | 397(21.7) | 74(18.6) | 0.87(0.66,1.15) | 241(22.8) | 51(21.2) | 1.33(0.93,1.91) |
Whether having a steady lover | ||||||
Yes | 1616(88.3) | 302(18.7) | 1 | 979(92.4) | 156(15.9) | 1 |
No | 215(11.7) | 71(33.0) | 2.13(1.56,2.94) | 80(7.6) | 32(40.0) | 3.57(2.17,5.56) |
Disposable income per month | ||||||
<400(yuan) | 360(19.7) | 79(21.9) | 1.13(0.86,1.58) | 184(17.4) | 47(25.5) | 1.90(1.26,2.87) |
400~899 (yuan) | 792(43.3) | 154(19.4) | 1 | 503(47.5) | 77(15.3) | 1 |
≥900(yuan) | 679(37.1) | 140(20.6) | 1.08(0.83,1.39) | 372(35.1) | 64(17.2) | 1.15(0.80,1.65) |
Age at first sexual intercourse | ||||||
<20 years | 346(18.9) | 91(26.3) | 1.53(1.16,2.00) | 118(11.1) | 39(33.1) | 2.62(1.72,4.00) |
≥20 years | 1485(81.1) | 282(19.0) | 1 | 941(88.9) | 149(15.8) | 1 |
Whether knowing the conditions of conception | ||||||
Yesc | 1384(75.6) | 243(17.6) | 1 | 851(80.4) | 134(15.7) | 1 |
No | 447(24.4) | 130(29.1) | 1.93(1.50,2.46) | 208(19.6) | 54(26.0) | 1.88(1.31,2.69) |
Whether knowing the use of the menstrual cycle for contraception | ||||||
Yesd | 1087(59.4) | 199(18.3) | 1 | 801(75.6) | 130(16.2) | 1 |
No | 744(40.6) | 174(23.4) | 1.36(1.08,1.71) | 258(24.4) | 58(22.5) | 1.50(1.06,2.12) |
Whether thinking abortion endanger women's physical and mental health | ||||||
Yes | 1452(79.3) | 280(19.3) | 1 | 905(85.5) | 148(16.4) | 1 |
No | 379(20.7) | 93(24.5) | 1.36(1.04,1.78) | 154(14.5) | 40(26.0) | 1.80(1.20,2.68) |
Whether thinking abortion endanger women’s future pregnancy | ||||||
Yes | 1645(89.8) | 293(17.8) | 1 | 1007(95.1) | 166(16.5) | 1 |
No | 186(10.2) | 80(43.0) | 3.48(2.54,4.78) | 52(4.9) | 22(42.3) | 3.72(2.09,6.62) |
Whether use of condoms at first sexual intercourse | ||||||
Yes | 675(36.9) | 119(17.6) | 1 | 322(30.4) | 27(8.4) | 1 |
No | 1156(63.1) | 254(22.0) | 1.24(1.02,1.51) | 737(69.6) | 161(21.8) | 3.03(2.00,4.76) |
Whether use of contraceptives at first sexual intercourse | ||||||
Yes | 1718(93.8) | 341(19.8) | 1 | 964(91.0) | 168(17.4) | 1 |
No | 113(6.2) | 32(28.3) | 1.60(0.94,2.44) | 95(9.0) | 20(21.1) | 1.26(0.75,2.13) |
Frequency of use of contraception(methods were looked as effective for preventing pregnancy by responders) | ||||||
Always use | 548(29.9) | 105(19.2) | 1.71(0.83,3.55) | 358(33.8) | 48(13.4) | 0.40(0.16,0.91) |
Often/sometimes | 1209(66.0) | 259(21.4) | 1.97(0.97,4.01) | 676(63.8) | 133(19.7) | 0.63(0.26,1.53) |
Never use | 74(4.1) | 9(12.2) | 1 | 25(2.4) | 7(28.0) | 1 |