Sensitivity and specificity of the clinical prediction rule in identifying different sexual risk experiences
| Outcome | CPR score | Participants self-reporting as at risk (n) | Sensitivity (95% CI) | Participants self-reporting as not at risk (n) | Specificity (95% CI) |
| 2+ male sexual partners in last year | |||||
| ≤8 | 50 | Not calculated | 83 | Not calculated | |
| 9 | 19 | 83.2 (79.3 to 86.5) | 18 | 56.1 (51.3 to 60.6) | |
| 10 | 38 | 76.8 (72.7 to 80.7) | 11 | 68.2 (63.7 to 72.5) | |
| 11 | 27 | 64.0 (59.4 to 68.4) | 13 | 75.7 (71.5 to 80.0) | |
| 12 | 34 | 54.9 (50.2 to 59.6) | 9 | 84.5 (80.8 to 87.7) | |
| ≥13 | 129 | Not calculated | 14 | Not calculated | |
| Total | 297 | 148 | |||
| Combined 2+ partners or risk from partner | |||||
| ≤4 | 20 | Not calculated | 22 | Not calculated | |
| 5 | 18 | 94.2 (91.7 to 96.3) | 16 | 25.3 (21.4 to 29.8) | |
| 6 | 16 | 89.1 (85.7 to 91.8) | 8 | 43.7 (39.0 to 48.5) | |
| 7 | 22 | 84.6 (80.9 to 87.9) | 8 | 52.9 (48.1 to 57.6) | |
| 8 | 33 | 78.3 (74.1 to 82.0) | 12 | 62.0 (57.3 to 66.6) | |
| 9 | 30 | 69.0 (64.5 to 73.4) | 5 | 75.9 (71.7 to 79.9) | |
| 10 | 50 | 60.3 (55.7 to 65.0) | 6 | 81.6 (77.7 to 85.2) | |
| ≥11 | 161 | Not calculated | 10 | Not calculated | |
| Total | 350 | 87 | |||
| Risk of unintended pregnancy in the last 6 months | |||||
| ≤2 | 28 | Not calculated | 130 | Not calculated | |
| 3 | 29 | 82.5 (78.6 to 86.0) | 70 | 48.3 (43.4 to 53.1) | |
| 4 | 15 | 64.4 (59.6 to 68.9) | 20 | 74.3 (70.0 to 78.4) | |
| 5 | 10 | 55.0 (50.2 to 59.8) | 16 | 81.8 (77.8 to 85.4) | |
| 6 | 19 | 48.8 (43.9 to 53.6) | 6 | 87.7 (84.2 to 90.6) | |
| ≥7 | 59 | Not calculated | 27 | Not calculated | |
| Total | 160 | 269 | |||
CPR, clinical prediction rule.