[The study of the association between lung cancer screening and smoking behavior change].

The smoking cessation rate of 1 314 people at high risk of lung cancer in the area of lung cancer screening and early diagnosis and early treatment in Sichuan Province increased from 22.37% at baseline to 41.78% after screening (χ²=227.97, P <0.001), and the smoking amount of persistent smokers decreased from 20 cigarettes per day to 15 cigarettes per day ( t =11.76, P <0.001). Those with positive results in lung cancer screening were more likely to quit smoking or continue to quit smoking. Male, younger age or lower education level would increase the risk of continuous smoking or relapse ( P <0.05).