Table 5 Tobacco chewing and location-specific oral cancer incidence
From: Tobacco chewing and female oral cavity cancer risk in Karunagappally cohort, India
Site of cancer | Tobacco chewing | Oral cancer cases | RR | 95% CI | |
|---|---|---|---|---|---|
Tongue (ICD9: 141) | P<0.001 | ||||
Never | 13 | 1 | Reference | ||
Former | 5 | 6.7 | 2.3–19.4 | ||
Current | 20 | 3.9 | 1.9–8.0 | ||
Unknown | 0 | ||||
Gum and mouth (ICD9: 143–145) | P<0.001 | ||||
Never | 9 | 1 | Reference | ||
Former | 9 | 16.7 | 6.3–44.0 | ||
Current | 32 | 10.0 | 4.6–21.8 | ||
Unknown | 0 |
