Table 3

Prevalence of sexual/drug-use behaviors of study participants
Total (N=2688) Males (N=1324) Females (N=1329) χ2
Part one Sexual behaviors in lifetime; n (%)
1. Sexual intercourse in lifetime 76.95** a
 Ever had 188 (7.0) 146 (11.0) 33 (2.5)
 Never had 2500 (93.0) 1178 (89.0) 1296 (97.5)
2. Gender of the sexual partner lifetime 3.25 b
 Heterosexual partner 152 (80.5) 121 (83.0) 31 (70.0)
 Homosexual partner 11 (6.0) 7 (4.7) 4 (15.0)
 Both 25 (13.5) 18 (12.3) 7 (15.0)
3. Sexual intercourse partners in lifetime 0.62 b
 One 113 (60.3) 86 (59.0) 27 (68.4)
 Two 10 (5.3) 8 (5.7) 2 (5.3)
 ≥ three 65 (34.4) 52 (35.2) 13 (26.3)
4. Unprotected sexual intercourse 0.01a
 Ever had 80 (42.4) 62 (42.5) 18 (52.1)
 Never had 108 (57.6) 84 (57.5) 24 (57.9)
5. Age of the first sexual intercourse
 ≤14 years 31 (16.4) 26 (17.4) 5 (22.0) 3.22 b
 15-17 years 92 (49.2) 67 (46.2) 25 (57.1)
 ≥18 years 65 (34.4) 53 (36.4) 12 (20.8)
6. Age of the first sexual partner 0.95 b
 ≤14 years 30 (15.8) 23 (16.0) 7 (15.0)
 15-17 years 82 (43.6) 66 (45.3) 16 (35.0)
 ≥18 years 76 (40.6) 57 (38.7) 19 (50.0)
Part two Sexual behaviors in last three months; n (%)
1. Antecedent sexual behaviors with heterosexual partner 32.38** a
 No/occasional 2548 (94.8) 1225 (92.5) 1294 (97.4)
 Often/usually 140 (5.2) 99 (7.5) 35 (2.6)
2. Antecedent sexual behaviors with homosexual partner 12.90** a
 No/occasional 2642 (98.3) 1309 (98.9) 1306 (98.3)
 Often/usually 46 (1.2) 15 (1.1) 23 (1.7)
3. Sexual intercourse
 Ever had 137 (5.1) 102 (7.7) 25 (1.9) 46.75** a
 Never had 2551 (94.9) 1222 (92.3) 1304 (98.1)
4. Among these sexual intercourses
(1) Heterosexual intercourse 17.85** a
 Ever had 121 (88.1) 98 (96.0) 17 (68.0)
 Never had 16 (11.9) 4 (4.0) 8 (32.0)
(2) Homosexual intercourse 2.93 a
 Ever had 59 (42.9) 38 (37.1) 14 (56.0)
 Never had 78 (57.1) 64 (62.9) 11 (44.0)
(3) Sexual intercourse partners (%) 0.76 b
 One 69 (50.7) 50 (49.1) 15 (61.5)
 Two 9 (6.7) 7 (7.0) 2 (7.7)
 ≥ three 59 (42.7) 45 (43.9) 8 (30.8)
(4) Unprotected sexual intercourse 0.88 a
 Ever had 58 (42.1) 41 (39.7) 13 (52.0)
 Never had 79 (57.9) 61 (60.3) 12 (48.0)
(5) Sexual intercourse while drunk 4.77* a
 Ever had 54 (39.6) 45 (43.9) 5 (20.0)
 Never had 83 (60.4) 57 (56.1) 20 (80.0)
(6) Sexual intercourse with high-risk partners 1.35 a
 Ever had 35 (25.9) 28 (27.3) 4 (16.0)
 Never had 102 (74.1) 74 (72.9) 21 (84.0)
Part three Substance use behaviors in last three months; n (%)
1. Injection drug use 18.43** a
 Ever had 38 (1.4) 29 (2.2) 4 (0.3)
 Never had 2650 (98.6) 1295 (97.8) 1325 (99.7)
2. Oral/rhinal drug use 13.64** a
 Ever had 32 (1.2) 25 (1.9) 5 (0.4)
 Never had 2656 (98.8) 1299 (98.1) 1324 (99.6)
3. Cigarette smoking 24.75** a
 No/occasional 2634 (98.0) 1282 (96.8) 1322 (99.5)
 Often/usually 54 (2.0) 42 (3.2) 7 (0.5)
4. Alcohol drinking 71.84** a
 No/occasional 2580 (96.0) 1231 (93.0) 1321 (99.4)
 Often/usually 108 (4.0) 93 (7.0) 8 (0.6)

Antecedent sexual behaviors refers to kiss and petting.

Unprotected sexual intercourse refers to the sexual intercourse without condemn use.

High-risk partners refer to people with HIV/AIDS/STI, people with drug use, and people with multiple.

sexual partners.

a 2*2 Chi-square Test.

b K*2 Chi-square Test.

* P<0.05.

**P<0.01.

Li et al.

Li et al. BMC Public Health 2013 13:295   doi:10.1186/1471-2458-13-295

Open Data