Table 1.

Demographic and clinical characteristics of the study participants

Variable	Lung cancer patients	Healthy controls
Number of subjects, n	20	20
Age at recruitment, y
Mean ± SD	62 ± 5	63 ± 6
Range	53–70	53–74
BMI, kg/m2
Mean ± SD	26.2 ± 4.8	26.1 ± 3.5
Range	17.6–33.9	21.1–34.6
Gender
%Male	55%	40%
Smoking status
%Current smokers	60%	30%
Histologic subtype, n
NSCLC, adenocarcinoma	9
NSCLC, squamous cell carcinoma	11
Clinical stage according to TNM classification, 7th ed, n
IA	16
IB	4