Table 3.
LMM Group x Time Interaction Effects for STAND Outcome Measures
| STAND | TAU | Group x Time Interaction | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linear | Quadratic | Linear | Quadratic | Linear | Quadratic | |||||||
| b | p | b | p | b | p | b | p | b | p | b | p | |
| Home Setting: Adolescent Outcomes | ||||||||||||
| OTP Problems (P) | −.19 | .000 | .01 | .000 | −.04 | .031 | .00 | .184 | −.14 | .000 | .01 | .000 |
| Disruptive Behavior (P) | −.06 | .002 | .01 | .001 | .01 | .536 | .00 | .419 | −.08 | .009 | .01 | .005 |
| ADHD Symptom Severity (P) | −.12 | .000 | .01 | .000 | −.01 | .478 | .00 | .808 | −.11 | .000 | .01 | .001 |
| Home Setting: Parent Outcomes | ||||||||||||
| Internalized Parenting Stress (P) | −.13 | .000 | .01 | .008 | .00 | .995 | .00 | .625 | −.13 | .004 | .01 | .032 |
| Parent-Teen Conflict (A) | −.04 | .134 | .00 | .176 | −.01 | .581 | .00 | .727 | −.02 | .547 | .00 | .520 |
| Home Setting: Parent Mechanisms | ||||||||||||
| Parent-Teen Contracting (P) | .31 | .000 | −.02 | .000 | .06 | .466 | .00 | .889 | .25 | .027 | −.02 | .014 |
| Use of Contingent Privileges (P) | .36 | .000 | −.03 | .000 | −.15 | .051 | .01 | .075 | .51 | .000 | −.04 | .000 |
| School Setting: Adolescent Outcomes | ||||||||||||
| OTP Problems (T) | −.06 | .038 | .00 | .087 | −.04 | .265 | .00 | .572 | −.02 | .594 | .00 | .521 |
| Classroom Behavior (T) | −.03 | .246 | .00 | .143 | .01 | .623 | .00 | .299 | −.04 | .254 | .00 | .084 |
| ADHD Symptom Severity (T) | −.04 | .072 | .00 | .308 | −.02 | .369 | .00 | .986 | −.02 | .604 | .00 | .509 |
| Recording Homework (O) | .02 | .020 | .00 | .006 | −.01 | .381 | .00 | .573 | .03 | .027 | .00 | .025 |
| Bookbag Organization (O) | .02 | .045 | .00 | .067 | .01 | .584 | .00 | .404 | .02 | .343 | .00 | .544 |
| Cumulative GPA (S) | .04 | .116 | .00 | .150 | −.02 | .473 | .00 | .776 | .06 | .118 | .00 | .265. |
| % of Work Turned In (S) | .00 | .918 | .00 | .928 | .00 | .858 | .00 | .825 | .00 | .944 | .00 | .818 |
Note. Tests of significant group by time linear and quadratic interaction terms controlling for group, time, time*time, IQ, and subtype in each LMM. P= Parent, A=Adolescent T=Teacher, O=Direct Observation, S=School Records. STAND and TAU columns reflect the average linear and quadratic (if applicable) change for each group. The Group x Time Interaction column reflects a test of the difference between the STAND and TAU groups.