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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: Drug Alcohol Depend. 2017 May 23;177:59–66. doi: 10.1016/j.drugalcdep.2017.03.020

Table 3. Demand indices by presence of psychopathology.

Any Psychopathology Emotional Disorder Substance Use Disorder
No Yes No Yes No Yes
(n = 66) (n = 45) (n = 76) (n = 35) (n = 92) (n = 19)
Metric Mean SEM Mean SEM F p Mean SEM Mean SEM F p Mean SEM Mean SEM F p
Intensity 7.25 1.39 12.72 1.70 6.62 .012 7.50 1.30 13.75 1.94 5.81 .018 8.09 1.16 16.17 2.62 9.78 .002
Omax 5.79 2.08 11.18 2.54 4.08 .036 6.52 1.95 11.14 2.92 1.55 .216 7.31 1.77 11.18 3.97 3.97 .049
Pmax 1.50 0.33 2.19 0.40 0.99 .332 1.78 0.31 1.69 0.46 0.05 .832 1.55 0.27 2.75 0.61 2.06 .155
Breakpoint 2.34 0.37 2.56 0.45 0.37 .543 2.40 0.35 2.50 0.52 0.05 .824 2.37 0.31 2.72 0.70 0.57 .453
Elasticity 0.42 0.14 0.42 0.17 0.70 .403 0.48 1.28 0.42 1.13 1.09 .300 0.48 0.12 0.12 0.27 4.05 .047

Note: Mean/SEM are non-transformed values; Means are adjusted for covariates (Gender, age, race, FTND, Economic strain).