Table 1 Chewing Tobacco and Cancer of the Mouth and Upper Respiratory Sites
From: Tobacco harm reduction: an alternative cessation strategy for inveterate smokers
Anatomic Site | RR (95%CI) | Studies | Cases/Controls |
|---|---|---|---|
Oral cavity | 0.6 (0.3–1.3) | 2 | 283/296 |
Pharynx | ---- | Â | --- |
Oral cavity + pharynx | 1.1 (0.8–1.6) | 4 | 2113/4454 |
Larynx | 1.3 (0.9–1.8) | 1 | 387/2560 |
Oral + pharynx + larynx | 1.7 (1.2–2.4) | 2 | 362/457 |
All sites | 1.2 (1.0–1.4) | 8 | 3145/5245 |