Table 1. Baseline Characteristics of Subjects Enrolled in K-LUCAS Project Pilot Study.

Baseline Characteristics	Values
Age, years	63.2 ± 5.4
Male sex (%)	253 (98.8)
Height, cm*	168.2 ± 6.2
Weight, kg*	69.2 ± 9.7
BMI, kg/m2* (%)	24.4 ± 3.0
Underweight	4 (1.6)
Normal	75 (29.6)
Overweight	71 (28.1)
Obese	103 (40.7)
Smoking status (%)
Current smoker	145 (56.6)
Ex-smoker	111 (43.4)
Pack-years†	40 (30–340)

Values are expressed as means ± standard deviations or numbers (%). ^*Height, weight, and BMI were missing in three patients, ^†For pack-year, value is expressed as median (range). BMI = body mass index, K-LUCAS = Korean Lung Cancer Screening