Table 1.

Distribution of demographic and smoking characteristics

Characteristic	Never (n=28)	Former (n=26)	Current (n=28)	p
Age (years)
Mean ± SD	46.9 ± 14.8	56.6 ± 16.7	51.5 ± 12.0	0.06
Median (range)	48.5 (26, 70)	56.5 (26, 79)	49.5 (23, 75)	0.09
Gender, n (%)
Male	14 (50)	15 (58)	16 (57)	0.85
Female	14 (50)	11 (42)	12 (43)
Race, n (%)
Caucasian	15 (54)	16 (60)	13 (46)	0.03
Black	4 (14)	3 (12)	13 (46)
Hispanic	6 (21)	3 (12)	2 (7)
Asian	2 (7)	1 (4)	0 (0)
Other	1 (4)	3 (12)	0 (0)
Pack-year, n (%)
< 20	n/a	6 (24)	10 (36)	0.66
21-40	n/a	9 (36)	9 (32)
> 40	n/a	10 (40)	9 (32)