Skip to main content

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 ----   ---
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