Table 1.
Demographic and clinical information
| Variable | Smokers | Non-smokers |
|---|---|---|
| Subject number | 18 | 21 |
| Age, mean (SD),years | 33.6 (10.9) | 32.6 (10.5) |
| Male (N) | 6 | 11 |
| Female (N) | 13 | 10 |
| IQa | 101.8 (10.2) | 102.6 (9.8) |
| FTND score, mean (SD) | 5.1 (2.0) | – |
| CO, mean (SD), ppm | 17.3 (11.18) | – |
| QSU, mean (SD) | 104.47 (30.23) | – |
| Plasma cotinine, mean (SD) (ng/ml)b | 127.9 (116.2) | – |
FTND Fagerström test for nicotine dependence score was ≥ 4 (Heatherton et al. 1991)
QSU Questionnaire on Smoking Urges (Tiffany and Drobes 1991) to assess craving
CO levels of carbon monoxide in expired air
IQ Wechsler Memory Scale (Wechsler, 1987).
aSmokers N = 18, non-smokers, N = 18, data unavailable for three subjects
bSmokers N = 16, plasma cotinine data unavailable for two subjects