Table 3.
Univariate logistic regression analysis for predicting stone impaction and grade 4 stones
| Variables | Stone impaction (Grade 3–4) | Grade 4 Stones | p-value | |
|---|---|---|---|---|
| OR (95% CI) | p-value | OR (95% CI) | ||
| Age | 1.00 (0.979–1.02) | 0.976 | 1.023 (0.988–1.059) | 0.205 |
| Gender (female) | 1.737 (0.921–3.276) | 0.088 | 3.329 (1.218–9.103) | 0.019 |
| Body mass index | 0.959 (0.897–1.02) | 0.214 | 0.943 (0.841–1.06) | 0.315 |
| Hypertension | 1.293 (0.561–2.98) | 0.547 | 2.18 (0.657–7.232) | 0.203 |
| Diabetes mellitus | 0.594 (0.160–2.204) | 0.436 | 0.87 (0.107–7.086) | 0.897 |
| History of stone treatment | 0.856 (0.416–1.76) | 0.673 | 0.753 (0.207–2.74) | 0.666 |
| Preoperative positive urine culture | 3.61 (0.983–13.261) | 0.053 | 3.10 (0.604–15.923) | 0.175 |
| Colic severity | 0.729 (0.642–0.828) | < 0.001 | 0.772 (0.662–0.899) | < 0.001 |
| Time from pain onset to surgery | 1.016 (1.008–1.024) | < 0.001 | 1.007 (1.003–1.012) | < 0.001 |
| Stone location (upper ureter) | 2.873 (1.574–5.247) | < 0.001 | 12.993 (2.888–58.447) | < 0.001 |
| Stone volume | 1.004 (1.002–1.006) | < 0.001 | 1.002 (1.001–1.003) | < 0.001 |
| Stone density | 1.000 (0.999–1.002) | 0.355 | 0.999 (0.998–1.001) | 0.482 |
| PUWT | 1.391 (1.189–1.626) | < 0.001 | 1.423 (1.17–1.731) | < 0.001 |
| Presence of severe hydronephrosis | 7.934 (3.675–17.128) | < 0.001 | 8.128 (2.863–23.074) | < 0.001 |
| Renal parenchymal thickness | 0.90 (0.839–0.966) | 0.003 | 0.874 (0.779–0.98) | 0.022 |
| Perirenal stranding | 0.736 (0.361–1.503) | 0.400 | 0.67 (0.185–2.433) | 0.543 |
| Opacity | 1.897 (0.958–3.757) | 0.066 | 2.14 (0.593–7.722) | 0.245 |
| Creatinine | 0.877 (0.372–2.07) | 0.765 | 0.154 (0.021–1.11) | 0.064 |
| White blood cell count | 0.957 (0.868–1.05) | 0.372 | 0.934 (0.79–1.104) | 0.423 |
| Neutrophil count | 0.946 (0.852–1.05) | 0.294 | 0.952 (0.796–1.139) | 0.592 |
| Lymphocyte count | 1.083 (0.760–1.542) | 0.660 | 0.782 (0.419–1.457) | 0.438 |
| Platelet count | 1.001 (0.996–1.00) | 0.775 | 1.001 (0.993–1.008) | 0.862 |
| Monocyte count | 0.447 (0.148–1.35) | 0.153 | 0.262 (0.034–2.009) | 0.198 |
| SIII | 1.00 (1.00–1.00) | 0.592 | 1.00 (1.00–1.001) | 0.615 |
| Neutrophil-to-lymphocyte ratio | 0.956 (0.861–1.063) | 0.409 | 1.013 (0.881–1.163) | 0.860 |
| Platelet-to-lymphocyte ratio | 1.00 (0.995–1.004) | 0.873 | 1.002 (0.996–1.008) | 0.523 |
OR Odds ratio, CI Confidence interval, PUWT Peri-calculus ureteral wall thickness, SIII Systemic immune-inflammation index