Data were extracted from PLCO and NLST to stratify the risk of RCC by sex, race, age at inclusion, obesity, and smoking status.
Overall, 701/154,118 and 190/53,242 RCCs were detected in PLCO and NLST, respectively.
Incidence rates were higher in men (PLCO: 0.56 vs. 0.28/1000 person y, NLST: 0.73 vs. 0.35/1000 person y; both with P<0.0001).
In the PLCO, male sex, age>60 years, obesity, and intensity of smoking were associated with higher risk of developing RCC.
In the NLST, sex and morbid obesity increased the risk for RCC but age, ethnicity, and smoking intensity were not predictors.