Table 1.
Participant Characteristics
| Escalating | Fixed | Control | |
|---|---|---|---|
| Number | 59 | 58 | 29 |
| Female (%) | 25 (42) | 26 (45) | 16 (55) |
| Mean age (SD) | 41.9 (13.0) | 41.3 (11.8) | 40.6 (10.0) |
| Caucasian (%) | 43 (73) | 39 (67) | 16 (55) |
| Marital status | |||
| Single (%) | 21 (36) | 22 (38) | 9 (31) |
| Married (%) | 14 (24) | 13 (22) | 9 (31) |
| Other (%) | 24 (40) | 23 (40) | 11 (38) |
| Income (US$) | |||
| <15,000 (%) | 26 (44) | 29 (50) | 8 (28) |
| 15 to 24,999 (%) | 12 (20) | 13 (22) | 7 (24) |
| 25 to 34,999 (%) | 6 (10) | 6 (10) | 7 (24) |
| ≥35,000 (%) | 15 (25) | 10 (17) | 7 (24) |
| Employment | |||
| Full time (%) | 26 (44) | 23 (40) | 15 (52) |
| Education | |||
| GED or high school (%) | 21 (36) | 23 (40) | 11 (38) |
| Vo tech or associate (%) | 21 (36) | 22 (38) | 12 (41) |
| Bachelors+ (%) | 17 (29) | 13 (22) | 6 (21) |
| Parents smoked | |||
| Yes (%) | 53 (90) | 48 (83) | 23 (79) |
| Mom only (%) | 11 (21) | 9 (19) | 4 (17) |
| Dad only (%) | 12 (23) | 10 (21) | 6 (26) |
| Both (%) | 30 (57) | 29 (60) | 13 (57) |
| Mean age of | |||
| First cigarette (SD) | 15.3 (4.3) | 15.7 (6.6) | 15.4 (2.8) |
| Regular smoker (SD) | 17.9 (5.8) | 17.6 (6.2) | 17.3 (3.1) |
| Lives with smoker (%) | 37 (63) | 32 (55) | 18 (62) |
| Tried to quit (%) | 54 (92) | 52 (90) | 24 (83) |
| Mean number of cigarettes per day (SD) | 21.7 (5.3) | 24.3 (6.9) | 21.9 (6.3) |
| Mean intake breath CO ppm (SD) | 24.0 (9.2) | 25.7 (11.7) | 22.1 (7.0) |