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. Author manuscript; available in PMC: 2017 Aug 16.
Published in final edited form as: Lung Cancer. 2011 Dec 9;76(2):150–158. doi: 10.1016/j.lungcan.2011.10.014

Figure 2.

Figure 2

Forest plot for the meta-analysis of parity and lung cancer risk. Each study is shown by the point estimate of the RR (square proportional to the weight of each study) and 95% CI for the RR (extending lines); summary RRs and 95% CIs by random effects calculations are depicted as a diamonds. Point estimate values higher than 1 indicate that increasing parity is associated with increased lung cancer risk. Results are stratified by study design (case-control versus cohort) and then studies are listed by their reported per-child relative risk. CI = confidence interval; RR = relative risk.