Figure 2 : Relative risk function and the corresponding 95% confidence intervals (CIs), describing the best-fitting dose-response relationship between the BMI level and LC risk:

From: Body mass index and risk of lung cancer: Systematic review and dose-response meta-analysis

Figure 2

(a) Overall analysis, including 26 cohort studies. (b) Men; (c) Women; (d) Current smokers; (e) Ex-smokers; (f) Never smoker; (g) Adenocarcinoma; (h) Small cell carcinoma; (i) Squamous cell carcinoma. BMI = 21.7 kg/m2, the mid-point of normal weight (BMI = 18.5–24.9 kg/m2), was served as a reference (RR = 1). The vertical lines indicate 95%CIs.