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Smoking distribution by gender and by T site.
| Gender | T site | |||||||
|---|---|---|---|---|---|---|---|---|
| Males | Females | Oral cavity | Oropharynx | Supraglottic larynx | Glottic larynx | Hypopharynx | Total | |
| Smoker | 120 | 33 | 69 | 19 | 18 | 43 | 4 | 153 |
| Former smoker | 136 | 26 | 67 | 24 | 18 | 32 | 21 | 162 |
| Never smoker | 58 | 75 | 94 | 16 | 4 | 15 | 4 | 133 |
| Missing | 4 | 3 | 2 | 3 | - | 2 | - | 7 |
| Total | 318 | 137 | 232 | 62 | 40 | 92 | 29 | 455 |
