Table 1. Demographic and baseline characteristics of patients with KSM.
| Characteristics | Value | % |
|---|---|---|
| N | 223 | 100% |
| Age (years) | 39.6±9.8 | |
| >40 | 116 | 52.018 |
| ≤40 | 107 | 47.982 |
| Smoking status | ||
| Smoker | 7 | 3.139 |
| Nonsmoker | 216 | 96.861 |
| The course of the disease (months) | 39.4±61.9 | |
| >3 | 162 | 72.646 |
| ≤3 | 61 | 27.354 |
| Urinary tract infection | ||
| Yes | 102 | 45.740 |
| No | 121 | 54.260 |
| Lower urinary tract obstruction | ||
| Yes | 25 | 11.211 |
| No | 198 | 88.789 |
| Distribution of the size of vesical leukoplakia | ||
| >1 cm | 190 | 85.202 |
| ≤1 cm | 33 | 14.798 |
| Distribution of the location of vesical leukoplakia | ||
| Trigone of bladder | 175 | 78.475 |
| Other bladder parts | 48 | 21.525 |
| Extent of resection | ||
| Beyond the edge of vesical leukoplakia >2 cm | 95 | 42.601 |
| Beyond the edge of vesical leukoplakia ≤2 cm | 128 | 57.399 |
| Distribution of pathology | ||
| Atypical urothelial hyperplasia | 28 | 12.556 |
| No atypical urothelial hyperplasia | 195 | 87.444 |
KSM, keratinizing squamous metaplasia.