Sensitivity, specificity, predicted proportion of women who received antibiotics and the predicted proportion of women who would return to the practices due to treatment failure
| Risk score cut-off point* | Sensitivity, %, (95% CI) | Specificity, %, (95% CI) | Antibiotics prescribed, %, (95% CI) | Returning patients, %, (95% CI) |
| >0.21 | 100.0 (94.6 to 100.0) | 5.1 (1.4 to 12.6) | 97.2 (93.0 to 99.2) | – |
| >0.30 | 98.5 (91.8 to 100.0) | 16.7 (9.2 to 26.8) | 90.3 (84.2 to 94.6) | 0.7 (0.0 to 3.8) |
| >0.39 | 75.8 (63.6 to 85.5) | 42.9 (31.6 to 54.6) | 65.3 (56.9 to 73.0) | 11.1 (6.5 to 17.4) |
| >0.45 | 75.8 (63.6 to 85.5) | 43.6 (32.4 to 55.3) | 65.3 (56.9 to 73.0) | 11.1 (6.5 to 17.4) |
| >0.48 | 53.0 (40.3 to 65.4) | 64.1 (52.4 to 74.7) | 43.8 (35.5 to 52.3) | 21.5 (15.1 to 29.1) |
| >0.57 | 28.8 (18.3 to 41.3) | 83.3 (73.2 to 90.8) | 22.2 (15.7 to 29.9) | 32.6 (25.1 to 40.9) |
| >0.65 | 15.2 (7.5 to 26.1) | 91.0 (82.4 to 96.3) | 11.8 (7.0 to 18.2) | 38.9 (30.9 to 47.4) |
Estimates are given with 95% CIs at different cut-off points.
*Based on the sum of the logistic regression coefficients for each predictor.