Table 1.
Summary of Participant Demographics
| Smokers (n = 28) |
Control Subjects (n = 28) |
|
|---|---|---|
| Age, Years: Mean (SD) | 32.68 (10.02) | 30.11 (7.83) |
| Gender, Male:Female | 13:15 | 16:12 |
| IQ, WASI, Mean (SD) | 108.04 (11.63) | 107.65 (12.24) |
| Education, Years: Mean (SD) | 12.89 (2.49) | 14.00 (2.61) |
| Ethnicity, AA:C:As | 8:20:0 | 11:14:3 |
| Cigarettes/Day, Min-Max (mean) | 18–40 (22.80) | NA |
| Age at First Use, Years: Min-Max mean | 9–31 (15.46) | NA |
| Years of Use, Min-Max, (Mean) | 2.5–38 (16.48) | NA |
| FTND, Min-Max (Mean) | 3–9 (5.89) | NA |
There were no significant differences between groups on any demographic measure (see also Table S3 in the Supplement).
AA, African American; As, Asian/Asian American; C, Caucasian; FTND, Fagerström Test for Nicotine Dependence; Max, maximum; Min, minimum; NA, not applicable; WASI, Wechsler Adult Scale of Intelligence.