Table 3.

Characteristics of the lung tumor versus adjacent normal lung tissue (Replication set I).

Lung Tumor versus Adjacent Normal Lung Tissue (Replication Set I)
Total lung tumour-adjacent normal lung samples (n)	200
Adenocarcinoma (n)	50 (pairs)
Squamous cell carcinoma (n)	50 (pairs)
Mean age at diagnosis (years)	64 (range: 43–81)
Males (n)	68
Females (n)	32
Current smokers (n)	45
Former smokers (n)	54
Unknown smoking status (n)	1
Mean pack years (py)	46 (range: 1–150)
Number of patients considered in the analysis (n)	94 *

* 6 patients did not meet quality control criteria.