Table 4.
Multilevel results for interactions between pretreatment participant characteristics (trichotomous moderator variables), intervention condition, and change in psychopathological symptom severity (dummy coded) for the intention-to-treat sample (N=400) using full maximum likelihood estimation.
| Interaction terms | Education levela | Diagnosesb | Years since onsetc | ||||||
|
|
B | SE | P | B | SE | P | B | SE | P |
| Interceptd | 0.88 | 0.07 | <.001 | 0.87 | 0.06 | <.001 | 0.88 | 0.09 | <.001 |
| Moderator dummy 1 | –0.16 | 0.10 | .11 | 0.44 | 0.16 | .005 | –0.04 | 0.11 | .687 |
| Moderator dummy 2 | 0.08 | 0.14 | .55 | –0.34 | 0.12 | .004 | –0.13 | 0.13 | .313 |
| T1-T2e | 0.63 | 0.07 | <.001 | 0.73 | 0.06 | <.001 | 0.64 | 0.09 | <.001 |
| T2-T3f | 0.17 | 0.06 | .005 | 0.16 | 0.05 | .002 | 0.10 | 0.08 | .18 |
| T2-T4g | 0.22 | 0.08 | .004 | 0.36 | 0.06 | <.001 | 0.31 | 0.10 | .002 |
| Conditionh | –0.14 | 0.10 | .17 | –0.02 | 0.08 | .82 | –0.28 | 0.13 | .02 |
| Condition×T1-T2 | 0.03 | 0.09 | .76 | –0.02 | 0.08 | .85 | 0.09 | 0.12 | .43 |
| Condition×T2-T3 | –0.17 | 0.08 | .04 | –0.21 | 0.07 | .004 | –0.20 | 0.10 | .06 |
| Condition×T2-T4 | –0.25 | 0.11 | .03 | –0.38 | 0.09 | <.001 | –0.33 | 0.14 | .02 |
| Moderator dummy 1×T1-T2 | 0.03 | 0.09 | .72 | –0.04 | 0.15 | .80 | –0.04 | 0.11 | .70 |
| Moderator dummy 1×T2-T3 | –0.04 | 0.08 | .64 | 0.02 | 0.15 | .89 | 0.04 | 0.09 | .68 |
| Moderator dummy 1×T2-T4 | 0.07 | 0.11 | .48 | 0.01 | 0.19 | .96 | –0.03 | 0.12 | .80 |
| Moderator dummy 2×T1-T2 | 0.17 | 0.13 | .17 | –0.09 | 0.11 | .40 | 0.20 | 0.12 | .10 |
| Moderator dummy 2×T2-T3 | 0.10 | 0.11 | .35 | 0.03 | 0.10 | .75 | 0.14 | 0.11 | .19 |
| Moderator dummy 2×T2-T4 | 0.35 | 0.14 | .02 | –0.19 | 0.13 | .14 | 0.02 | 0.14 | .88 |
| Cond×mod×dummy 1i | 0.22 | 0.14 | .11 | –0.07 | 0.22 | .74 | 0.36 | 0.15 | .02 |
| Cond×mod×dummy 2i | 0.19 | 0.20 | .34 | 0.08 | 0.16 | .63 | 0.27 | 0.18 | .13 |
| Cond×mod×dummy 1×T1-T2i | –0.03 | 0.13 | .82 | –0.07 | 0.22 | .75 | –0.07 | 0.15 | .63 |
| Cond×mod×dummy 1×T2-T3i | –0.08 | 0.11 | .50 | –0.43 | 0.21 | .04 | –0.03 | 0.13 | .82 |
| Cond×mod×dummy 1×T2-T4i | –0.12 | 0.15 | .42 | –0.24 | 0.26 | .37 | 0.01 | 0.17 | .93 |
| Cond×mod×dummy 2×T1-T2i | 0.05 | 0.18 | .77 | 0.10 | 0.15 | .52 | –0.14 | 0.17 | .43 |
| Cond×mod×dummy 2×T2-T3i | –0.32 | 0.16 | .049 | –0.03 | 0.14 | .83 | –0.09 | 0.15 | .56 |
| Cond×mod×dummy 2×T2-T4i | –0.42 | 0.21 | .049 | 0.15 | 0.18 | .41 | 0.03 | 0.19 | .89 |
aEducation level dummy 1 (0=high education level; 1=medium education level), education level dummy 2 (0=high education level; 1=low education level).
bDiagnoses dummy 1 (0=mood disorder; 1=anxiety disorder), diagnoses dummy 2 (0=mood disorder; 1=adjustment disorder).
cYears since onset: years since disorder onset dummy 1 (0=1-5 years; 1=>5 years), years since disorder onset dummy 2 (0=1-5 years; 1=<1 year).
dIntercept: general psychopathological symptom severity in control at baseline (T2).
eT1-T2: dummy-coded change in general psychopathological symptom severity from T1 to T2.
fT2-T3: dummy-coded change in general psychopathological symptom severity from T2 to T3.
gT2-T4: dummy-coded change in general psychopathological symptom severity from T2 to T4.
hCondition (0=control; 1=intervention).
iCond × mod × dummy: condition × moderator × dummy.