Table 4 Impact of wish for protection against sexually transmitted infections on choice of contraceptive method in the three survey years, by sex and whether have a regular partner.
| Â | 1982 | Â | 1996 | Â | 2001 | Â | Â |
|---|---|---|---|---|---|---|---|
Protection from STIs | N (%) | 95% CI | N (%) | 95% CI | N (%) | 95% CI | Trend* |
Regular partner | Â | Â | Â | Â | Â | Â | Â |
   Boys: |  |  |  |  |  |  |  |
   Impact on the chosen strategy | 2 (7) | (0–5) | 10 (32) | (5–15) | 8 (27) | (3–13) |  |
   No impact on the chosen strategy | 28 (93) | (25–30) | 21 (68) | (16–26) | 22 (73) | (17–27) |  |
   Sexually experienced boys (total) | 30 (100) |  | 31 (100) |  | 30 (100) |  | χ2 = 6.40 p = 0.041 |
   Girls: |  |  |  |  |  |  |  |
   Impact on the chosen strategy | 5 (4) | (1–9) | 27 (27) | (18–36) | 20 (21) | (12–28) |  |
   No impact on the chosen strategy | 120 (96) | (116–124) | 74 (73) | (65–83) | 76 (79) | (68–84) |  |
   Sexually experienced girls (total) | 125 (100) |  | 101 (100) |  | 96 (100) |  | χ2 = 23.53 p < 0.0001 |
No regular partner | Â | Â | Â | Â | Â | Â | Â |
   Boys: |  |  |  |  |  |  |  |
   Impact on the chosen strategy | 8 (21) | (3–13) | 23 (72) | (18–28) | 23 (51) | (16–30) |  |
   No impact on the chosen strategy | 30 (79) | (25–35) | 9 (28) | (4–14) | 22 (49) | (15–29) |  |
   Sexually experienced boys (total) | 38 (100) |  | 32 (100) |  | 45 (100) |  | χ2 = 18.53 p < 0.0001 |
   Girls: |  |  |  |  |  |  |  |
   Impact on the chosen strategy | 6 (10) | (1–11) | 55 (71) | (47–63) | 37 (39) | (28–46) |  |
   No impact on the chosen strategy | 56 (90) | (51–61) | 23 (29) | (15–31) | 59 (61) | (50–68) |  |
   Sexually experienced girls (total) | 62 (100) |  | 78 (100) |  | 96 (100) |  | χ2 = 53.24 p < 0.0001 |