Table 2. Univariate and multivariate Cox analyses of factors predicting the recurrence of KSM.
| Factors | Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|---|
| HR (95% CI) | P value | HR (95% CI) | P value | ||
| Age >40 vs. ≤40 | 1.114 (0.549–2.260) | 0.766 | – | – | |
| Smoker vs. nonsmoker | 1.704 (0.406–7.154) | 0.467 | – | – | |
| CD >3 vs. ≤3 m | 0.921 (0.424–2.001) | 0.836 | – | – | |
| UTI vs. no UTI | 2.111 (1.043–4.271) | 0.038 | 1.827 (0.895–3.732) | 0.098 | |
| LUTO vs. no LUTO | 1.503 (0.577–3.914) | 0.404 | – | – | |
| LS >1 vs. ≤1 cm | 2.527 (0.330–19.335) | 0.372 | – | – | |
| Trigone vs. other parts | 1.626 (0.748–3.533) | 0.220 | – | – | |
| ER >2 vs. ≤2 cm | 4.533 (0.471–43.642) | 0.191 | – | – | |
| AUH vs. no AUH | 4.191 (2.006–8.756) | <0.001 | 3.506 (1.663–7.392) | 0.001 | |
KSM, keratinizing squamous metaplasia; CD, course of the disease; UTI, urinary tract infection; LUTO, lower urinary tract obstruction; LS, leukoplakia size; ER, extent of resection; AUH, atypical urothelial hyperplasia.