Table 1.
Participant demographic and baseline characteristics as a function of dependence diagnosis and smoking-cessation abstinence
| Pooled Sample TAU+SCT (N=249) | Cocaine-Dependent TAU+SCT (N=147) | Methamphetamine-Dependent TAU+SCT (N=102) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Continued Smoking N=174 | Smoking Abstinent N=75 | Smoking Analysisa | Continued Smoking N=107 | Smoking Abstinent N=40 | Smoking Analysisa | Continued Smoking N=67 | Smoking Abstinent N=35 | Smoking Analysisa | |
| Age, mean (SD), y | 37.7 (9.9) | 36.2 (10.1) | W=1.1 | 41.4 (9.1) | 40.4 (9.9) | W=0.3 | 31.8 (8.0) | 31.5 (8.2) | W=0.4 |
| Sex, male, n (%) | 89 (51.1) | 47 (62.7) | X2(1)=2.8 | 57 (53.3) | 29 (72.5) | X2(1)=4.4* | 32 (47.8) | 18 (51.4) | X2(1)=0.1 |
| Race, n (%) | X2(2)=0.9 | F=0.017 | X2(1)=0.1 | ||||||
| African-American | 56 (32.4) | 27 (36.0) | 56 (52.8) | 27 (67.5) | 0 (0) | 0 (0) | |||
| Caucasian | 105 (60.7) | 41 (54.7) | 48 (45.3) | 12 (30.0) | 57 (85.1) | 29 (82.9) | |||
| Other/mixed | 12 (6.9) | 7 (9.3) | 2 (1.9) | 1 (2.5) | 10 (14.9) | 6 (17.1) | |||
| Ethnicity, Hispanic, n (%) | 20 (11.6) | 11 (14.7) | X2(1) =0.5 | 10 (9.4) | 1 (2.5) | F=0.117 | 10 (14.9) | 10 (28.6) | X2(1)=2.7 |
| Baseline use (prior 28 days) | |||||||||
| Days/stimulant use | 2.3 (5.2) | 1.3 (4.1) | T(174.0)=1.5 | 2.7 (5.7) | 2.2 (5.5) | W=1.4 | 1.5 (4.1) | 0.3 (0.9) | T(76.6)=2.3* |
| Stimulant-free, n (%) | 118 (67.8) | 61 (81.3) | X2(1)=4.7* | 68 (63.6) | 31 (77.5) | X2(1)=2.6 | 50 (74.6) | 30 (85.7) | X2(1)=1.7 |
| Days/drug use | 5.1 (8.7) | 2.1 (5.4) | T(218.4)=3.3** | 5.7 (9.3) | 3.5 (6.9) | T(93.1)=1.6 | 4.1 (7.8) | 0.5 (1.6) | T(76.3)= 3.6*** |
| Drug-free, n (%) | 90 (51.7) | 55 (73.3) | X2(1)=10.1** | 51 (47.7) | 26 (65.0) | X2 (1)=3.5 | 39 (58.2) | 29 (82.9) | X2(1)=6.3* |
| Smoking history | |||||||||
| No. of Smoking years | 21.1 (9.5) | 19.4 (9.7) | W=1.4 | 24.2 (9.0) | 22.4 (9.8) | W=1.0 | 16.1 (8.1) | 16.0 (8.4) | W=0.2 |
| No. of cigarettes/day | 17.1 (8.6) | 14.8 (7.6) | W=2.1* | 18.1 (8.9) | 16.1 (7.5) | W=1.4 | 15.5 (7.7) | 13.3 (7.5) | W=1.3 |
Note.
a
W= Wilcoxon rank-sum test; X2(df)= Pearson chi-square test; T(df)= Student's t-test; F= Fisher's exact test.
*
p<.05
**
p<.01
***
p<.001. Where not specifically indicated, numbers represent means (standard deviations).