Stage | N | Median RPR at diagnosis | % With increased titres within 14 days following treatment (95% CI) | % With titres increased by one dilution following therapy (95% CI) | % With titres increased by ≥2 dilutions following therapy (95% CI) |
Primary | 115 | 1:16 | 30.4 (22.2 to 39.7) | 80.0 (63.1 to 91.6) | 20.0 (8.4 to 36.9) |
Secondary | 218 | 1:64 | 17.0 (12.2 to 22.6) | 97.3 (85.8 to 99.9) | 2.70 (0.1 to 14.2) |
Early latent | 132 | 1:32 | 15.9 (10.1 to 23.3) | 85.7 (63.7 to 97.0) | 14.3 (3.0 to 36.3) |
Total | 465 | 1:64 | 20.0 (16.5 to 23.9) | 88.2 (79.8 to 93.9) | 11.8 (6.1 to 20.2) |