The ICPR 65 model[61] follows the same approach, and estimates the relative lifelong risk probability of radon-induced cancer death to 1.23 × 10−6 per Bq/(m3·year).[62] This relative risk is a global indicator; the risk estimation is independent of sex, age, or smoking habit. Thus, if a smoker's chances of dying of lung cancer are 10 times that of a nonsmoker's, the relative risks for a given radon exposure will be the same according to that model, meaning that the absolute risk of a radon-generated cancer for a smoker is (implicitly) tenfold that of a nonsmoker. The risk estimates correspond to a unit risk of approximately 3–6 × 10−5 per Bq/m3, assuming a lifetime risk of lung cancer of 3%.