Table 1 Study population demographics and smoking and quitting history.
CS | EV | FS | NS | |
|---|---|---|---|---|
Demographics | ||||
Number of eligible subjects | 77 | 39 | 37 | 52 |
Age, years—mean [SD] | 36.7 [± 7.4] | 29.1 [± 8.8] | 34.2 [± 8.8] | 30.2 [± 7.3] |
Sex, % (N) | ||||
Female | 51 (39) | 23 (9) | 68 (25) | 65 (34) |
Male | 49 (38) | 77 (30) | 30 (11) | 35 (18) |
Other | 0 (0) | 0 (0) | 3 (1) | 0 (0) |
BMI, kg/m2—mean [SD] | 28.6 [± 5.8] | 26.4 [± 5.9] | 29.8 [± 5.7] | 25.6 [± 4.6] |
Waist circumference, cm—mean [SD] | 89.3 [± 13.6] | 84.9 [± 11] | 94 [± 15] | 80.5 [± 11.8] |
Ethnicity, % (N) | ||||
White | 61 (47) | 62 (24) | 76 (28) | 81 (42) |
Non-White | 17 (13) | 23 (9) | 16 (6) | 13 (7) |
Other* | 22 (17) | 15 (6) | 8 (3) | 6 (3) |
Smoking history | ||||
Pack years, mean [SD] | 14.7 [± 11.3] | NA | 9.4 [± 15] | NA |
Daily cigarette consumption, mean [SD] | 15.6 [± 6.2] | ≥ 10 | 17.0 [± 10.2] | NA |
Time (min) since last cigarette, mean [SD] | 142 [± 264] | |||
Quitting history | ||||
Number of years, mean [SD] | NA | ≥ 3 | 6.4 [± 6.2] | NA |
