Figure 2.

Lung cancer incidence in each category of time to first cigarette (TTFC) and smoking intensity in the Environment and Genetics in Lung Cancer Etiology study (EAGLE). The figure shows the point estimate and 95% confidence interval of the absolute lung cancer rate per 100000 person-years (PY). The table under the figure shows the value of the point estimate (number of lung cancer case subjects). Incidence rates were estimated using a binomial linear model with eight joint categories of TTFC and smoking intensity as well as the never smokers category. All statistical tests were two-sided.