From: Does formaldehyde have a causal association with nasopharyngeal cancer and leukaemia?
Authors, (Years) | Studies | Overall OR or RR (95% CI) |
---|---|---|
Collins et al.,(1997) [36] | Cohort studies with reported expected deaths Industrial cohort studies Case-control studies All Studies | 1.6 (0.8–3.0) 1.2 (0.4–2.5) 1.3 (0.9–2.1) 1.3 (1.2–1.5) |
Bosetti et al. (2008) [37] | Hauptmann et al. 2004-plant 1 Hauptmann et al. 2004-plants 2–10 Industrial cohort studies | 9.10 (4.09–20.26) 0.64 (0.16–2.56) 1.33 (0.69–2.56) |
Bachand et al. (2010) [38] | Cohort studies (excluding single plant) Case control studies | 0.72 (0.40–1.29) 1.22 (1.00–1.50) |