Systematic Reviews
Copyright ©The Author(s) 2016.
World J Meta-Anal. Apr 26, 2016; 4(2): 10-43
Published online Apr 26, 2016. doi: 10.13105/wjma.v4.i2.10
Table 4 Meta-analyses of childhood environmental tobacco smoke exposure
Estimates consideredNo. of estimatesRelative risk (95% confidence limits)
Heterogeneity1
Fixed-effects meta-analysisRandom-effects meta-analysis
From any cohabitant411.08 (1.01-1.15)1.15 (1.02-1.29)+++
N America131.00 (0.89-1.13)1.06 (0.89-1.28)+
Europe110.94 (0.81-1.08)1.02 (0.81-1.29)+
Asia151.26 (1.11-1.42)1.31 (1.02-1.67)+++
Other21.10 (0.95-1.28)1.13 (0.89-1.45)NS
Heterogeneity between continents+
From mother specifically90.96 (0.77-1.20)0.98 (0.77-1.25)NS
From father specifically110.90 (0.80-1.00)1.00 (0.78-1.29)+++
From parents specifically80.78 (0.64-0.94)0.78 (0.64-0.94)NS

Citation: Lee PN, Fry JS, Forey BA, Hamling JS, Thornton AJ. Environmental tobacco smoke exposure and lung cancer: A systematic review. World J Meta-Anal 2016; 4(2): 10-43