The estimated variance components and test-retest reliability of the four scales
| Incontinence score | Variance (variation) between subjects | Variance (variation) between occasions | Measurement error variance/variation | Reliability |
| New score | 497.3 | 29.6 | 47.1 | 0.87 |
| Pescartori | 530.0 | 0 | 382.1 | 0.58 |
| Wexner | 565.2 | 0 | 193.3 | 0.75 |
| AMS | 651.4 | 6.1 | 120.3 | 0.84 |