Table 1.
Sample demographics and smoking characteristics by availability of biomarker data
| Full biomarker data present (n = 173) | Missing data on ≥1 biomarker (n = 27) | p Valuea | |
| Age in years, M (SD) | 33.4 (10.2) | 36.0 (10.2) | .231 |
| Race, n (%) | .794 | ||
| Non-Hispanic White | 101 (58.4) | 18 (66.7) | |
| Non-Hispanic Black | 56 (32.4) | 7 (25.9) | |
| Hispanic | 5 (2.9) | 0 (0.0) | |
| Other | 11 (6.4) | 2 (7.4) | |
| Education, n (%) | .547 | ||
| Less than HS | 59 (34.1) | 10 (37.0) | |
| G.E.D. | 31 (17.9) | 5 (18.5) | |
| HS Graduate | 44 (25.4) | 9 (33.3) | |
| At least some college | 39 (22.5) | 3 (11.1) | |
| Sentenced for a violent crime | 49 (28.3) | 8 (29.6) | 1.000 |
| Tobacco useb, n (%) | |||
| Never user | 26 (15.0) | 2 (7.4) | .648 |
| Former user | 9 (5.2) | 1 (3.7) | |
| Current user | 138 (79.8) | 24 (88.9) | |
| Smoker characteristicsc | Full biomarker data present (n = 134) | Missing data on ≥1 biomarker (n = 23) | |
| Cigarettes per day, M (SD) | 9.9 (9.0) | 13.8 (17.1) | .109 |
| Age of initiation, M (SD) | 16.8 (15.8) | 16.7 (14.0) | .964 |
| FTNDd score, M (SD) | 3.3 (1.8) | 3.6 (1.8) | .565 |
Note. HS = high school; G.E.D. = General Educational Development.
a
t Test for continuous variables, Fisher’s exact test for categorical data.
b
Participants’ self-reported tobacco use status (includes smoking and smokeless use) at time of interview.
c
Restricted to participants reporting current cigarette use at the time of the interview.
d
Fagerström Test for Nicotine Dependence (Heatherton et al., 1991).