Table 1.

Cohort characteristics

Characteristic	Statistics
Age (yr), mean (SD)	66 (11)
Male, n (%)	18 (95%)
Race/ethnicity, n (%)
White	17 (94%)
Smoking status, n (%)
Current smoker	4 (21%)
Former smoker	10 (53%)
Never-smoker	5 (26%)
Education, n (%)
High school or less	7 (39%)
Largest nodule size (in diameter), mean (SD)	5 mm (3 mm)
Time from nodule detection to baseline interview, mean (SD) (median)	154 d (145) (121)
Type of physician caring for nodule
Primary care provider	19 (100%)
Attending	15 (79%)
Nurse practitioner	3 (16%)
Physician assistant	1 (5%)

Percents are of nonmissing information.