Skip to main content
. Author manuscript; available in PMC: 2016 May 25.
Published in final edited form as: Psychol Addict Behav. 2016 May;30(3):287–299. doi: 10.1037/adb0000158

Table 2.

Percentage of Drinking
Days (PDD)
Percentage of Heavy
Drinking Days (PDH)
Estimate SE z p Estimate SE z p
Treatment Weeks 1–8
  Intercept −0.38 0.42 −0.93 .355 2.03 0.38 5.36 .000
  Baseline PDD or PDH 4.60 1.62 2.83 .005 3.90 1.13 3.44 .001
  Choice variable1 −0.80 0.83 −0.97 .333 0.07 0.65 0.11 .909
  Condition −1.49 0.83 −1.79 .074 −1.29 0.71 −1.83 .067
  Time 0.85 0.33 2.54 .011 0.87 0.36 2.40 .017
  Condition × Time 0.36 0.66 0.55 .584 0.42 0.65 0.64 .519
  Random Intercept Var. 8.10 4.88
  Random Time Var. 4.56 3.63
  Intercept-Time Corr. −0.35 −0.41
Treatment Weeks 9–16
  Intercept 2.02 0.48 4.24 .000 3.80 0.67 5.69 .000
  Baseline PDD or PDH 3.08 1.97 1.56 .119 3.85 1.91 2.02 .044
  Choice variable 0.23 1.01 0.23 .820 0.78 1.11 0.71 .480
  Condition −0.47 0.94 −0.50 .616 0.00 1.01 0.00 .997
  Time 0.05 0.33 0.14 .888 −0.42 0.59 −0.70 .483
  Condition × Time −0.35 0.62 −0.56 .573 −0.84 0.76 −1.10 .270
  Random Intercept Var. 9.15 8.21
  Random Time Var. 3.40 3.92
  Intercept-Time Corr. −0.10 −0.09
Post-Treatment
  Intercept 1.38 0.43 3.21 .001 3.20 0.44 7.20 .000
  Baseline PDD or PDH 5.40 1.83 2.94 .003 5.11 1.57 3.27 .001
  Choice variable 0.72 0.98 0.74 .462 1.32 0.98 1.35 .176
  Condition −0.62 0.89 −0.70 .484 −0.93 0.88 −1.05 .292
  Time −0.10 0.12 −0.78 .434 0.27 0.11 2.52 .012
  Condition × Time 0.06 0.24 0.25 .803 0.34 0.20 1.71 .087
  Random Intercept Var. 7.78 7.10
  Random Time Var. 0.66 0.41
  Intercept-Time Corr. 0.03 0.00
1

Choice variable denotes participants who had a choice of individual or couple therapy versus those who only had the option of some form of couple therapy.