Table 5.
Baseline Characteristics of Study Participants.
| Both groups (n = 22) | Study completers (n = 11) | Study non-completers (n = 11) | t/χ2 | p-value | |
|---|---|---|---|---|---|
| DEMOGRAPHICS | |||||
| Gender M, F | 10/12 | 4/7 | 6/5 | 0.73 | 0.39 |
| Race C, AA | 17/5 | 8/3 | 9/2 | 0.23 | 0.61 |
| Age | 36.32 ± 11.86 | 36.0 ± 11.19 | 36.64 ± 13.03 | −0.12 | 0.90 |
| Educationa | 2.91 ± 0.68 | 3.09 ± 0.54 | 2.73 ± 0.79 | 1.27 | 0.22 |
| Parental occupationb | 7.36 ± 5.02 | 6.0 ± 3.92 | 8.73 ± 5.78 | −1.30 | 0.21 |
| SMOKING BEHAVIOR | |||||
| CO* | 18.87 ± 9.05 | 19.27 ± 8.48 | 17.75 ± 11.84 | 0.28 | 0.79 |
| CPD | 24.60 ± 8.60 | 23.60 ± 9.20 | 25.40 ± 8.20 | −0.49 | 0.63 |
| SMOKING HISTORYc | |||||
| Years of smoking | 22.46 ± 14.09 | 18.06 ± 12.67 | 28.33 ± 14.80 | −1.40 | 0.19 |
| Age daily smoker | 17.36 ± 2.74 | 17.88 ± 2.53 | 16.67 ± 3.08 | 0.81 | 0.44 |
| Prior quit attempts | 3.71 ± 3.83 | 4.88 ± 3.56 | 2.17 ± 3.92 | 1.35 | 0.20 |
| SMOKING SCALESd | |||||
| FTND | 5.80 ± 2.27 | 5.89 ± 2.21 | 5.67 ± 2.58 | 0.18 | 0.86 |
| M-NWS | 9.87 ± 6.63 | 9.22 ± 5.61 | 10.83 ± 8.42 | −0.45 | 0.66 |
| QSU-brief | 33.93 ± 19.19 | 39.11 ± 15.37 | 26.17 ± 23.06 | 1.31 | 0.21 |
| SPSRQ | 14.94 ± 8.28 | 16.70 ± 9.06 | 12.0 ± 6.45 | 1.11 | 0.29 |
| CESD | 9.67 ± 4.69 | 9.67 ± 4.24 | 9.67 ± 5.72 | 0.00 | 1.00 |
| SSE | 40.07 ± 15.60 | 45.44 ± 12.07 | 32.0 ± 17.84 | 1.75 | 0.10 |
AA, African American; C, Caucasian; CESD, Center for Epidemiological Studies on Depression; CO, carbon monoxide; CPD, cigarettes per day; F, Female; FTND, Fagerström Test for Nicotine Addiction; M, Male; M-NWS, Minnesota Nicotine Withdrawal Scale (Hughes-Hatsukami Withdrawal Scale); SPSRQ, Sensitivity to Punishment and Sensitivity to Reward Questionnaire; SSE, Symptoms and Side Effects; QSU-brief, Questionnaire of Smoking Urges Short Form.
Education was scored on a scale from 1 to 4; (1) completed kindergarten through 8th grade; (2) 9th grade through highschool graduate; (3) some college through college graduate; (4) postgraduate education.
Ranks determined from the Diagnostic Interview for Genetic Studies (1–18 scale); higher rank (lower numerical value) corresponds to higher socioeconomic status.
Baseline scores are missing for nine participants.
Responses are missing for seven participants.
Scores imputed for seven study completers and two study non-completers.