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Association of the duration of habits with oral cancer
| Duration of habits (years) | Number of males (%) | Number of females (%) | Total |
|---|---|---|---|
| <5 | 8 (58.3) | 5 (41.7) | 13 |
| 5–10 | 20 (71.4) | 8 (28.6) | 28 |
| 10–15 | 34 (67.3) | 17 (32.7) | 51 |
| 15–20 | 92 (63.9) | 52 (36.1) | 144 |
| >20 | 50 (61.7) | 31 (38.3) | 81 |
| Total | 204 | 113 | 317 |
