| HIV (AIDS) | 164 (32.2) | 181 (38.1) | n.s. | 110 (22.5) | 118 (25.7) | n.s. |
| Hepatitis B | 62 (12.2) | 87 (18.4) | 0.02 | 67 (13.7) | 73 (15.9) | 0.04 |
| Trichomoniasis | 23 (4.5) | 49 (10.3) | <0.01 | 16 (3.3) | 35 (7.6) | <0.01 |
| Acquainted Contraceptive Methods | 510 | 475 |
| 488 | 459 |
|
| Condom | 374 (93.3) | 445 (93.7) | 0.03 | 447 (91.6) | 424 (92.4) | n.s. |
| Oral Contraceptive Pill | 374 (73.3) | 360 (75.8) | 0.03 | 385 (78.9) | 359 (78.2) | n.s. |
| Rhythm Method | 68 (13.3) | 94 (19.8) | <0.01 | 39 (8.0) | 60 (13.1) | <0.01 |
| Coitus interruptus (Pull-out Method) | 255 (50.0) | 248 (52.2) | <0.01 | 174 (35.7) | 164 (35.7) | 0.03 |
| Intrauterine Contraceptive Device (IUD) | 138 (27.1) | 143 (30.2) | 0.03 | 139 (28.5) | 139 (30.3) | 0.03 |