Table 3. Sexual experiences, HPV* vaccination status and contraceptive use among sexually active participants.
| Variable | Girls | Boys | p-value |
|---|---|---|---|
| Had had intercourse | 198 (51.0) | 167 (47.3) | ns |
| Age at first intercourse (mean) | 14.6 | 14.8 | ns |
| Age of partner at first intercourse (mean) | 16.1 | 15.2 | <0.001 |
| Age of partner at latest intercourse (mean) | 18.0 | 16.2 | <0.001 |
| Number of life-time sexual partners (mean) | 3.4 | 3.4 | ns |
| Number of sexual partners latest 3 months (mean) | 1.0 | 1.0 | ns |
| New sexual partner latest 3 months (n = 202/170) | 52 (25.7) | 47 (27.6) | ns |
| Given oral sex | 149 (38.4) | 96 (27.9) | 0.01 |
| Received oral sex | 147 (38.2) | 118 (34.2) | ns |
| Age at first oral sex (mean) | 15.0 | 15.0 | ns |
| Used condom at latest oral sex | 17 (7.9) | 10 (4.9) | <0.001 |
| Tested for STI** | 82 (21.2) | 34 (9.6) | <0.001 |
| Ever had an STI | 8 (2.1) | 5 (1.4) | ns |
| Vaccinated against HPV | 216 (55.5) | 1 (0.3) | <0.001 |
| Contraception during first intercourse (n = 198/167) | |||
| None | 38 (19.0) | 23 (13.9) | ns |
| Condom | 143 (72.2) | 118 (70.7) | ns |
| Withdrawal | 9 (4.5) | 8 (4.8) | ns |
| Oral contraceptive pill | 34 (17.1) | 31 (18.8) | ns |
| Other | 3 (1.5) | 5 (3.0) | ns |
| Contraception during first intercourse with latest partner (n = 187/158) | |||
| None | 40 (21.3) | 25 (15.8) | ns |
| Condom | 79 (42.2) | 94 (59.5) | 0.03 |
| Withdrawal | 5 (2.7) | 7 (4.4) | ns |
| Oral contraceptive pill | 72 (38.5) | 49 (31.0) | ns |
| Other | 16 (8.6) | 4 (2.5) | ns |
| Contraception during latest intercourse (n = 193/158) | |||
| None | 41 (21.1) | 27 (17.1) | ns |
| Condom | 57 (29.5) | 81 (51.3) | 0.02 |
| Withdrawal | 5 (2.6) | 5 (3.2) | ns |
| Oral contraceptive pill | 90 (46.6) | 52(32.9) | 0.01 |
| Other | 18 (9.1) | 9 (5.7) | ns |
Missing values excluded from the analysis
*HPV = Human papillomavirus
** STI = Sexually transmitted infection