Table 3.
Univariate and multivariate analyses of the factors predicting the spontaneous passage of ureteric stones.
| Variable | Univariate |
Multivariate |
||
|---|---|---|---|---|
| Odds ratio (95% CI) | P | Odds ratio (95% CI) | P | |
| Age | 0.65 (0.31–1.37) | 0.26 | – | |
| Sex | 0.88 (0.40–1.92) | 0.85 | – | |
| BMI | 0.52 (0.24–1.14) | 0.13 | – | |
| Smoking | 1.08 (0.49–2.41) | 0.51 | – | |
| Pain scale | 0.23 (0.03–1.82) | 0.19 | – | |
| Haematuria | 0.61 (0.28–1.33) | 0.25 | – | |
| Urine pH | 0.49 (0.23–1.04) | 0.08 | – | |
| Urine WBC count | 0.67 (0.21–2.10) | 0.6 | – | |
| Serum WBC count | 2.91 (1.28–6.59) | 0.006 | 0.22 (0.04–1.1) | 0.06 |
| Serum creatinine level | 1.31 (0.62–2.76) | 0.57 | – | |
| Radio-opaque stone | 0.77 (0.36–1.64) | 0.59 | – | |
| Level of stone | 10.1 (3.22–31.60) | <0.001 | 0.07 (0.02–0.38) | 0.2 |
| Side of stone | 0.6 (0.29–1.26) | 0.19 | – | |
| Size of stone | 2.82 (1.42–5.62) | 0.002 | 0.24 (0.06–0.98) | 0.47 |
| Hydronephrosis | 3.71 (1.72–8.01) | <0.001 | 2.18 (0.57–8.33) | 0.26 |
| PFS | 45.8 (15.5–135.5) | <0.001 | 27.05 (5.79–126.5) | <0.001 |
| TRS | 14.2 (5.44–37.27) | <0.001 | 8.3 (2.15–32.1) | 0.002 |
Variables included in the multivariate model were those significant on univariate analysis.