Table 2. Demographic and clinical characteristics of NSCLC patients and healthy subjects in an independent corhot.
| NSCLC (n = 64) | Controls (n = 58) | P-value | |
|---|---|---|---|
| Age | 67 (SD 11.5) | 65 (SD 10.6) | >0.05 |
| Sex | |||
| Female | 25 | 23 | >0.05 |
| Male | 39 | 35 | >0.05 |
| Race | |||
| White | 41 | 37 | >0.05 |
| African American | 23 | 21 | >0.05 |
| Smoking status | |||
| Pack-years | 30.9 (SD 24.8) | 27.7 (SD 28.4) | >0.05 |
| Location of tumor * | >0.05 | ||
| Central | 30 | ||
| Peripheral | 34 | ||
| Stage | >0.05 | ||
| Stage I | 16 | ||
| Stage II | 15 | ||
| Stage III | 17 | ||
| Stage IV | 16 | ||
| Histology | >0.05 | ||
| AC of lung | 33 | ||
| SC of lung | 31 |
Abbreviations: NSCLC: non–small-cell lung cancer; SD, standard deviation. AC, adenocarcinoma; SC, squamous cell carcinoma.
*
Peripheral tumors were located at or within 1 cm of the visceral pleura.