Table 1.

Characteristics of NSCLC patients and cancer-free smokers in a development cohort.

	NSCLC Cases (n = 68)	Controls (n = 69)	p-Value
Age	64.58 (SD 10.16)	60.34 (SD 12.18)	0.12
Sex			0.33
Female	27	28
Male	41	41
Smoking pack-years (median)	32.8	31.6	0.27
Stage
Stage I	34
Stage II	15
Stage III	11
Stage IV	8
Histological type
Adenocarcinoma	37
Squamous cell carcinoma	31

Abbreviations: NSCLC, non-small cell lung cancer. SD, standard deviation.