Table 1.
Clinicopathological characteristics of study population
| Variables | N | % |
|---|---|---|
| No. of patients | 342 | |
| TNM Stage | ||
| Ta | 154 | 45% |
| CIS | 9 | 3% |
| I | 93 | 27% |
| II | 54 | 16% |
| III | 18 | 5% |
| IV | 13 | 4% |
| Grade | ||
| 1 | 109 | 32% |
| 2 | 134 | 39% |
| 3 | 87 | 25% |
| 4 | 11 | 3% |
| Sex | ||
| Male | 259 | 76% |
| Female | 83 | 24% |
| Age at diagnosis | ||
| ≤40 | 22 | 6% |
| 41-50 | 60 | 18% |
| 51-60 | 175 | 51% |
| 61-65 | 84 | 25% |
| Median (range) | 58 (25-65) | |
| Smoking History | ||
| Never/Irregular | 45 | 13% |
| Former | 137 | 40% |
| Current | 159 | 46% |
| Duration of Smoking (years) | ||
| 0 | 46 | 13% |
| 1 to 15 | 36 | 11% |
| 16 to 29 | 79 | 23% |
| 30 to 39 | 95 | 28% |
| ≥ 40 | 86 | 25% |
| Smoking in Pack-Years | ||
| 0 | 46 | 13% |
| 1 to 30 | 103 | 30% |
| 31 to 60 | 105 | 31% |
| 61 to 85 | 53 | 15% |
| ≥ 86 | 35 | 10% |