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. 2013 Jul;74(4):626–634. doi: 10.15288/jsad.2013.74.626

Table 1.

Mean scores on alcohol- and smoking-related variables and demand curve indices for smokers and nonsmokersa

Smoking status
Variable Smoker (n = 67) M(SD) Nonsmoker (n = 140) M(SD)
No. of drinks per week 18.46 (12.72)* 14.83 (13.33)
Alcohol-related problemsb 15.27 (8.67)*** 11.30 (1.30)
Nicotine dependencec 1.96 (1.82)
No. of cigarettes per day 7.72 (5.87)
Depressiond 14.93 (8.95)** 11.95 (6.79)
Intensitye 10.90 (6.46)* 9.22 (6.18)
Breakpointf 10.58 (5.36)** 8.63 (5.02)
Omaxg 21.75 (11.51)*** 16.63 (11.17)
Pmaxh 4.43 (2.42)* 3.70 (2.17)
Elasticityi 0.04 (0.04)** 0.06 (0.05)
a

Because income has been found to be associated with alcohol demand, we examined the reported disposable income for nonessential items (e.g., clothing, compact discs, entertainment, alcohol, other drugs) between smokers and nonsmokers; there were no differences between these two groups (p = .69).

b

The Young Adult Alcohol Consequences Questionnaire was used to measure alcohol-related problems experienced within the past 6 months. Participants were asked to indicate which of 49 possible alcohol-related problems they have experienced. In this sample, scores ranged from 0 to 38, with higher scores indicative of more problems experienced.

c

To assess nicotine dependence, participants completed the Fagerström Test for Nicotine Dependence. This measure consists of seven items, with scores ranging from 0 to 8. Higher scores indicating more nicotine dependence.

d

Depressive symptoms were measured using the Center for Epidemiological Studies Depression (CES-D) scale. Participants are given 20 statements and rate how often in the past week they have felt that way, ranging from 0 (rarely or none of the time [<1 day]) to 3 (most or all of the time [5–7 days]). Four of the items are reverse scored. Higher scores indicate higher depression.

e

Intensity is the peak consumption at lowest price. In this sample, scores ranged from 0 to 34, with higher scores indicating greater intensity.

f

Breakpoint (i.e., the first price that completely suppresses consumption) ranged from 0 to 27, with higher scores indicating higher prices.

g

Omax = maximum alcohol expenditures. Scores ranged from 0 to 60, with higher scores indicating greater expenditure.

h

Pmax = maximum inelastic price. Scores ranged from 0.25 to 12, with higher scores indicating greater prices.

i

Elasticity (i.e., the rate of consumption reduction as a function of price) ranged from 0 to 0.30, with higher scores indicating greater sensitivity to increases in price.

*

p ≤ .05

**

p ≤ .01

***

p ≤ .001.