Table 2.
Bivariable and Multivariable Analyses to develop a Risk Score to Identify Women at High Risk of Residual Urinary Incontinence.
| Bivariable Analysis | Multivariable Analysis - Full Model | Multivariable Analysis - Final Model |
Risk Score Value |
||||
|---|---|---|---|---|---|---|---|
| Pre-operative Characteristic | OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value* | |
| Age | |||||||
| ≤ 50 years | 1.00 | 1.00 | 1.00 | 0 | |||
| >50 years | 3.20 (1.83-5.59) | <0.01 | 9.25 (2.23-38.38) | <0.01 | 5.66 (2.72-11.74) | <0.01 | 17 |
| Number of years with fistula | |||||||
| ≤5 years | 1.00 | 1.00 | -- | -- | |||
| 6-20 years | 2.02 (1.13-3.60) | 0.02 | 1.63 (0.80-3.32) | 0.17 | -- | -- | |
| >20 years | 3.16 (1.48-6.73) | <0.01 | 0.78 (0.17-3.51) | 0.75 | -- | -- | |
| HIV status | |||||||
| HIV-uninfected | 1.00 | -- | -- | -- | -- | ||
| HIV-infected | 0.74 (0.27-2.02) | 0.56 | -- | -- | -- | -- | |
| Body mass index, kg/m2 | |||||||
| < 25.0 | 1.00 | -- | -- | -- | -- | ||
| ≥ 25.0 | 0.98 (0.54-1.77) | 0.94 | -- | -- | -- | -- | |
| Number of prior fistula surgeries (at outside facility) | |||||||
| 0 | 1.00 | 1.00 | 1.00 | 0 | |||
| ≥1 | 1.51 (0.84-2.71) | 0.17 | 2.14 (0.95-4.81) | 0.07 | 3.31 (1.61-6.82) | <0.01 | 12 |
| Revised Goh classification | |||||||
| Type 1 | 1.00 | -- | -- | -- | -- | ||
| Type 2 | 6.27 (2.54-15.49) | <0.01 | -- | -- | -- | -- | |
| Type 3 | 13.44 (5.75-31.41) | <0.01 | -- | -- | -- | -- | |
| Type 4 | 24.35 (9.02-65.72) | <0.01 | -- | -- | -- | -- | |
| Goh vesicovaginal fistula size | |||||||
| <1.5 cm | 1.00 | 1.00 | 1.00 | 0 | |||
| 1.5-3.0 cm | 2.08 (1.14-3.78) | 0.02 | 2.71 (1.12-6.56) | 0.03 | 2.12 (0.96-4.69) | 0.06 | 8 |
| >3.0 cm | 3.19 (1.70-5.99) | <0.01 | 1.67 (0.63-4.43) | 0.31 | 2.02 (0.86-4.77) | 0.11 | 7 |
| Circumferential fistula | |||||||
| No | 1.00 | 1.00 | 1.00 | 0 | |||
| Yes | 5.01 (3.07-8.16) | <0.01 | 3.16 (1.45-6.89) | <0.01 | 4.51 (2.21-9.22) | <0.01 | 15 |
| Vaginal scarring | |||||||
| None/Mild | 1.00 | 1.00 | 1.00 | 0 | |||
| Moderate/Severe/Obliterated | 4.04 (2.35-6.95) | <0.01 | 3.32 (1.15-4.71) | 0.02 | 2.07 (1.09-3.94) | 0.03 | 7 |
| Bladder size | |||||||
| Large (>6 cm) | 1.00 | 1.00 | -- | -- | |||
| Small/moderate (≤6cm) | 1.83 (1.11-3.03) | 0.02 | 1.47 (0.75-2.88) | 0.26 | -- | -- | |
| Urethral length | |||||||
| >1.5 cm | 1.00 | 1.00 | 1.00 | 0 | |||
| ≤ 1.5 cm | 5.07 (2.88-8.92) | <0.01 | 2.12 (0.95-4.75) | 0.07 | 1.86 (0.91-3.81) | 0.09 | 6 |
OR= Odds ratio.
*
Odds ratios and p-values estimated using logistic regression.