Table 4.
Multivariate logistic regression analysis for predicting stone impaction and grade 4 impaction based on univariate results
| Variables | Stone impaction (Grade 3–4) | Grade 4 Stones | p-value | |
|---|---|---|---|---|
| OR (95% CI) | p-value | OR (95% CI) | ||
| Gender (female) | --- | --- | 6.333 (1.338–29.978) | 0.020 |
| Colic severity | 0.833 (0.71–0.977) | 0.024 | 0.793 (0.605–1.04) | 0.094 |
| Time from pain onset to surgery | 1.014 (1.004–1.024) | 0.005 | 1.002 (0.996–1.007) | 0.595 |
| Stone location (upper ureter) | 3.47 (1.557–7.732) | 0.002 | 11.339 (1.992–64.532) | 0.006 |
| Stone volume | 1.002 (1.00–1.005) | 0.044 | 1.001 (0.999–1.003) | 0.259 |
| PUWT | 1.357 (1.118–1.646) | 0.002 | 1.51 (1.088–2.095) | 0.014 |
| Presence of severe hydronephrosis | 3.662 (1.314–10.206) | 0.013 | 5.296 (0.875–32.062) | 0.070 |
| Renal parenchymal thickness | 1.021 (0.922–1.131) | 0.684 | 1.137 (0.935–1.383) | 0.199 |
OR Odds ratio, CI Confidence interval, PUWT Peri-calculus ureteral wall thickness