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. 2014 Sep 2;16(9):e199. doi: 10.2196/jmir.3507

Table 2.

Repeated measures mixed model of GAD-7 scores at post-test, 6, and 12 months.

Parameter Estimate Standard error df t / F P
Intercept
6.946 0.359 553.0 19.3 <.001
Condition



1.0 .410

Active website −0.117 0.508 553.0 −0.2 .818

Active website with email reminders −0.716 0.506 553.0 −1.4 .158

Active website with phone reminders −0.173 0.510 553.0 −0.3 .734

Control website with phone reminders −0.335 0.506 553.0 −0.7 .508

Control website 0.000 0.000


Time 29.5 <.001

Baseline 0.000 0.000



Post-test −1.066 0.494 389.2 −2.2 .032

6-month follow-up −2.337 0.512 372.8 −4.6 <.001

12-month follow-up −1.178 0.612 315.8 −1.9 .055
Condition × time interaction 0.8 .622

Active vs control at baseline 0.000 0.000



Active vs control at post-test 0.331 0.698 390.6 0.5 .636

Active vs control at 6 months 0.179 0.723 374.2 0.2 .805

Active vs control at 12 months −0.274 0.853 313.9 −0.3 .748

Active email vs control at baseline 0.000 0.000



Active email vs control at post-test −0.517 0.718 393.9 −0.7 .472

Active email vs control at 6 months 0.370 0.730 372.3 0.5 .612

Active email vs control at 12 months −0.157 0.896 319.4 −0.2 .861

Active phone vs control at baseline 0.000 0.000



Active phone vs control at post-test −0.689 0.682 384.5 −1.0 .314

Active phone vs control at 6 months 0.736 0.709 369.4 1.0 .300

Active phone vs control at 12 months −1.082 0.851 315.4 −1.3 .205

Control phone vs control at baseline 0.000 0.000



Control phone vs control at post-test −0.137 0.655 379.2 −0.2 .835

Control phone vs control at 6 months 0.394 0.683 364.4 0.6 .565

Control phone vs control at 12 months −0.150 0.808 310.2 −0.2 .853