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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: Int J Cancer. 2017 Jan 24;140(11):2422–2435. doi: 10.1002/ijc.30600

Figure 1.

Figure 1

The association between cigarette smoking status at diagnosis and overall survival following a diagnosis of epithelial ovarian cancer, by study site and overall. Study-specific hazard ratios (HRs) and 95% confidence intervals (CIs) were estimated using Cox regression models adjusted for age, race/ethnicity, stage and grade. The pooled hazard ratio (pHR) with corresponding 95% CI was estimated using a random effects model. (a) Current versus never smokers; (b) former versus never smokers.