Table 1 General characteristics of the students
|  | Total (n = 2,217) | Male (n = 1,335) | Female (n = 882) | p-value |
|---|---|---|---|---|
| Â | n (%) | n (%) | n (%) | Â |
Age (yrs) | Â | Â | Â | Â |
 < 20 years | 1404 (63.3) | 715 (53.6) | 689 (78.1) | < 0.001 |
 ≥ 20 years | 813 (36.7) | 620 (46.4) | 193 (21.9) |  |
Secondary school class | Â | Â | Â | Â |
 Ordinary-level | 575 (25.9) | 256 (19.2) | 319 (36.2) | < 0.001 |
 Advanced-level | 1642 (74.1) | 1079 (80.8) | 563 (63.8) |  |
Religion | Â | Â | Â | Â |
 Christian | 1447 (65.3) | 875 (65.5) | 572 (64.9) | 0.77 |
 Other | 770 (34.7) | 460 (34.5) | 310 (35.1) |  |
Family structure | Â | Â | Â | Â |
 Both biological parents | 1213 (54.8) | 734 (55.0) | 479 (54.4) | 0.03 |
 One biological parent | 367 (16.6) | 200 (15.0) | 167 (18.9) |  |
 Other | 635 (28.6) | 400 (30.0) | 235 (26.7) |  |
Father's or guardian's job | Â | Â | Â | Â |
 Employed | 1992 (95.5) | 1197 (94.8) | 795 (96.5) | 0.10 |
 Unemployed | 94 (4.5) | 65 (5.2) | 29 (3.5) |  |
Wealth Index | Â | Â | Â | Â |
 Low | 713 (32.2) | 466 (34.9) | 247 (28.0) | < 0.001 |
 Middle | 760 (34.3) | 459 (34.4) | 301 (34.1) |  |
 High | 744 (33.6) | 410 (30.7) | 334 (37.9) |  |
Ever had sexual intercourse | Â | Â | Â | Â |
 Yes | 891 (40.2) | 709 (53.1) | 182 (20.6) | < 0.001 |
 No | 1326 (59.8) | 626 (46.9) | 700 (79.4) |  |
Sexually active in the past one year | Â | Â | Â | Â |
 Yes | 665 (30.3) | 518 (39.3) | 147 (16.8) | < 0.001 |
 No | 1529 (69.7) | 800 (60.7) | 729 (83.2) |  |