Table 3 Meta-analysis of night work and breast cancer
Authors (years) | Overall OR or RR (95% CI) | Night work exposure category |
|---|---|---|
Megdal et al. (2005) [34] | 1.51 (1.36–1.68) | Ever |
Jia et al. (2013) [35] | 1.20 (1.08–1.33) | Ever |
1.15 (1.03–1.29) | ≥ 15 years | |
Kamdar et al. (2013) [36] | 1.21 (1.00–1.47) | Ever |
1.04 (0.92–1.18) | ≥ 8 years | |
Wang et al. (2013) [37] | 1.19 (1.05–1.35) | Ever |
1.03 (1.01–1.05) | Every 5 years of exposure increased | |
Ijaz et al. (2013) [38] | 1.05 (1.01–1.10) | Every 5 years of exposure increased |
Travis et al. (2016) [39] | 0.99 (0.95–1.03) | Ever |
1.01 (0.93–1.10) | ≥ 20 years | |
1.00 (0.87–1.14) | ≥ 30 years |