Table 3. Factors predictive of stent failure.
| Variable | Univariate | Multivariatea | ||
|---|---|---|---|---|
| OR (95% CI) | p-value | OR (95% CI) | p-value | |
| Age (continuous) | 1.00 (0.98–1.04) | 0.560 | ||
| Sex (female) | 0.48 (0.19–1.22) | 0.486 | ||
| Diabetes (yes) | 1.18 (0.34–4.10) | 0.789 | ||
| Hypertension (yes) | 0.55 (0.19–1.62) | 0.284 | ||
| Body mass index (continuous) | 0.98 (0.85–1.12) | 0.765 | ||
| Pre-stent eGFR (continuous) | 0.99 (0.98–1.01) | 0.568 | ||
| Ureteral obstruction site | ||||
| Proximal | Reference | |||
| Mid | 1.22 (0.36–4.13) | 0.747 | ||
| Distal | 0.91 (0.31–2.59) | 0.857 | ||
| Multiple or diffuse | 1.57 (0.12–9.06) | 0.728 | ||
| Bilateral obstruction (yes) | 2.06 (0.89–4.78) | 0.091 | ||
| Symptom (yes) | 0.73 (0.31–1.69) | 0.467 | ||
| Pre-stent pyuria (yes) | 2.84 (1.18–6.82) | 0.019 | 2.68 (1.10–7.19) | 0.045 |
| Post-stent systemic therapy (yes) | 1.76 (0.71–4.41) | 0.225 | ||
| Post-stent disease progression (yes) | 4.27 (1.19–15.28) | 0.026 | ||
| Number of stent change (continuous) | 0.96 (0.88–1.04) | 0.354 | ||
| Complications (yes) | 7.03 (2.13–23.18) | <0.001 | 8.02 (2.05–31.37) | 0.003 |
OR, odds ratio; CI, confidence interval; eGFR, estimated glomerular filtration rate.
a:Logistic regression model (stepwise selection).