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. Author manuscript; available in PMC: 2014 Feb 25.
Published in final edited form as: Psychopharmacology (Berl). 2013 Jun 28;230(3):363–373. doi: 10.1007/s00213-013-3169-7

Table 1.

Descriptive statistics, intercorrelations, and Cronbach alpha coefficients of demographic and smoking characteristics and Smoking Abstinence Questionnaire scales

Variable M (SD) or N (%) Intercorrelations (r)
1 2 3 4 5 6 7 8 9 10
1. Age 44.50 (10.97) 0.10 0.26 0.02 0.19 * 0.09 0.15 * −0.14 0.18 * 0.19 **
2. Male gender 122 (67.8 %) 0.02 0.04 −0.01 −0.05 −0.03 0.17 * 0.14 0.21 **
3. African-American race 87 (48.3 %) 0.27 0.13 −0.12 0.06 −0.11 0.03 0.20 **
4. Non-Hispanic ethnicity 167 (92.8 %) 0.11 −0.02 −0.04 −0.06 −0.06 0.10
5. Age of smoking onset 20.01 (6.16) 0.02 0.19 * 0.21 ** −0.04 0.00
6. Cigarettes/day 16.82 (6.98) 0.46 0.25 0.01 0.10
7. FTCD 5.27(1.91) 0.36 0.07 0.24 **
8. SAQ-Withdrawal 3.76 (1.43) (0.88) −0.03 0.43
9. SAQ-Optimistic
 Outcomes
2.86 (1.34) (0.72) 0.17 *
10. SAQ-Weight Gain 3.27 (1.86) (0.87)

N’s range from 173 to 180 due to missing data. Variables in parentheses along the diagonal represent Cronbach alpha estimates for Smoking Abstinence Questionnaire scales. Point-biserial correlations are reported for relationships between continuous variables and between continuous and dichotomous variables; phi coefficients are reported for relationships between dichotomous variables. Cigarettes/day = average number of cigarettes smoked per day; SAQ-Withdrawal = Withdrawal scale of the Smoking Abstinence Questionnaire (possible range 0–6); SAQ-Optimistic outcomes = Optimistic Outcomes scale of the Smoking Abstinence Questionnaire (possible range 0–6); SAQ-Weight Gain = Weight Gain scale of the Smoking Abstinence Questionnaire (possible range 0–6). Findings in italics are significant

FTCD Fagerström Test for Cigarette Dependence (possible range 0–10)

*

p<0.05

**p<0.01

p<0.001

p<0.0001