Exposure group | Study 1 | Study 2 | Pooled | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Population controls | Cancer controls | All controls, weighted | Males | Females | Population controls | |||||
na | ORb(95% CI) | OR (95% CI) | OR (95% CI) | n | OR (95% CI) | n | OR (95% CI) | n | OR (95% CI) | |
Cotton dust | ||||||||||
Squamous | 23 | 1.2 (0.6-2.3) | 0.8 (0.5-1.3) | 1.0 (0.6-1.6) | 37 | 1.3 (0.8-2.0) | 19 | 0.9 (0.4-1.7) | 79 | 1.1 (0.8-1.5) |
Small cell | 7 | 0.8 (0.3-2.2) | 0.6 (0.2-1.0) | 0.7 (0.3-1.5) | 16 | 1.2 (0.6-2.5) | 30 | 1.1 (0.5-2.3) | 53 | 1.2 (0.8-1.8) |
Adenocarcinoma | 21 | 2.7 (1.4-5.3) | 1.7 (1.0-2.9) | 2.1 (1.2-3.7) | 46 | 1.9 (1.2-3.0) | 61 | 1.2 (0.7-1.8) | 128 | 1.6 (1.2-2.2) |
Wool dust | ||||||||||
Squamous | 14 | 1.1 (0.5-2.4) | 0.6 (0.3-1.2) | 0.8 (0.4-1.6) | 13 | 0.6 (0.3-1.3) | 6 | 0.7 (0.3-2.2) | 33 | 0.8 (0.5-1.2) |
Small cell | 7 | 1.1 (0.4-3.2) | 0.8 (0.4-1.9) | 1.0 (0.4-2.3) | 6 | 0.8 (0.3-2.0) | 7 | 0.8 (0.3-2.6) | 20 | 0.9 (0.5-1.6) |
Adenocarcinoma | 12 | 2.2 (1.0-4.9) | 1.3 (0.7-2.5) | 1.6 (0.8-3.2) | 22 | 1.4 (0.8-2.5) | 24 | 1.2 (0.6-2.4) | 58 | 1.4 (1.0-2.0) |