Table 1.

The demographic and clinical variables of a training set of patients with malignant SPNs and patients with benign SPNs

60 Patients with malignant SPNs (stage I and II NSCLC)62 Patients with benign SPNs
Age, years, median (SD)67.3 (8.5)66.4 (8.5)
Sex
 Female22 (36.7%)23 (37.1%)
 Male38 (63.3%)39 (62.9%)
Race
 African American17 (28.3%)19 (30.7%)
 White43 (71.7%)43 (69.3%)
Nodule size (cm)
 Median (SD)2.3 (1.5)1.7 (1.6)
 Range0.6–4.30.2–3.8
Pack-years, median (SD)37.3 (26.5)32.6 (31.5)
Stages
 Stage I39 (65.0%)
 Stage II21 (35.0%)
Histologic types of NSCLC
 AC27 (45.0%)
 SCC29 (48.3%)
 Others4 (6.7%)

Abbreviation: AC, adenocarcinoma.