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. Author manuscript; available in PMC: 2010 Feb 27.
Published in final edited form as: Psychopharmacology (Berl). 2008 Feb 14;197(4):637–647. doi: 10.1007/s00213-008-1085-z

Table 2.

Predictors of Dysphoria from Time 45 minutes through Time 180 minutes, determined by Mixed Effects Regression.

Variable Regression Coefficient Standard Error t
Covariates
 Baseline dysphoria .24 .02 10.81***
 MC dysphoria .05 .02 3.33***
 Beverage order −1.24 1.30 −.95
 Week .23 .48 .48
 Liking .04 .11 .37
Time effects
 Time −2.10 .75 −2.80**
 (Time)2 .54 .24 2.31*
Beverage effects
 Beverage −1.14 .76 −1.51
 Beverage × week 1.37 .67 2.05*
 Beverage × time 2.25 1.04 2.17*
 Beverage × time2 −.70 .33 −2.12*
*

p < .05,

**

p < .01,

***

p < .001

Note. MC = Manipulation Check, Liking is time varying by day; Beverage order reflects the random order in which participants received the two beverages where 0=carbohydrate beverage presented first and 1=balanced beverage presented first; Beverage is coded 0=carbohydrate, 1=balanced; for all t-statistics df = 789, except for time where df = 56.