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Table 2 Multilevel regression analyses for ACT and CBT on depressive symptoms (QIDS-SR) and quality of life (EUROHIS)

From: One year follow-up and mediation in cognitive behavioral therapy and acceptance and commitment therapy for adult depression

Measure F df b SE p
QIDS-SR
 linear time 53.90 84.65 −2.02 .28 <.001
 quadratic time 68.02 144.73 1.75 .21 <.001
 cubic time 19.83 138.96 .35 .08 <.001
 waiting time 1.47 81.35 .16 .13 .23
 contrast 1.70 106.98 1.49 1.14 .20
 Linear time * Condition .02 84.56 .08 .55 .88
 Quadratic time * Condition .18 144.59 .18 .42 .67
 Cubic time * Condition 2.67 139.03 −.26 .16 .11
EUROHIS
 lineair time 30.35 71.10 1.40 .25 <.001
 quadratic time 29.89 118.47 −1.02 .19 <.001
 cubic time 12.97 111.40 −.25 .07 <.001
 waiting_time 2.54 80.72 −.21 .13 .11
 contrast 1.16 101.51 −1.23 1.14 .28
 Lineair time * Condition 1.83 71.04 −.67 .51 .18
 Quadratic time * Condition .03 118.34 .07 .37 .86
 Cubic time * Condition .24 111.45 −.07 .14 .63
  1. Note. ACT Acceptance and Commitment Therapy, CBT Cognitive Behavioral Therapy, EUROHIS European Health Interview Surveys Quality of Life Scale, QIDS-SR Quick Inventory for Depressive Symptomatology Self-Rated. Waiting time is the time between pretreatment assessment and first treatment session, in weeks. Condition refers to treatment group (CBT or ACT)