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Table 2 Outcomes of simple mediation analyses from baseline to post-treatment assessing indirect effects of the ACT intervention through process variables on the outcome measure CES-D compared to both control conditionsa

From: How and for whom does web-based acceptance and commitment therapy work? Mediation and moderation analyses of web-based ACT for depressive symptoms

     Bootstrap results for indirect effects (95 % CI)
  c’-path a-path b-path ab Lower Upper
ACT vs WLC
 Psychological flexibility −2.81* 4.39*** −0.44*** −1.9220* −3.22 −1.01
 FFMQ - observing −4.18*** 0.76* −0.73** −0.5584* −1.37 −0.09
 FFMQ - describing −4.16*** 1.41** −0.41 −0.5740* −1.56 −0.04
 FFMQ - acting with awareness −4.73*** 0.05 −0.14 −0.0064 −0.34 0.16
 FFMQ - non-judging of inner experience −3.89** 1.43* −0.59*** −0.8483* −2.06 −0.04
 FFMQ - non-reactivity to inner experience −3.41** 2.58*** −0.51** −1.3224* −2.54 −0.53
ACT vs EW
 Psychological flexibility −2.02 1.89 −0.36*** −0.6816 −1.50 0.09
 FFMQ - observing −2.72* −0.08 −0.24 0.0184 −0.14 0.40
 FFMQ - describing −2.52* 0.52 −0.36 −0.1872 −0.89 0.07
 FFMQ - acting with awareness −2.70* −0.53 0.00 −0.0005 −0.00 0.33
 FFMQ - non-judging of inner experience −1.92 0.94 −0.83*** −0.7794 −1.91 0.02
 FFMQ - non-reactivity to inner experience −1.72 1.37** −0.72*** −0.9876* −2.12 −0.31
  1. ACT Acceptance and Commitment Therapy, WLC Waiting List Condition, EW Expressive Writing, CES-D Center for Epidemiological Studies – Depression Scale, FFMQ Five Facet Mindfulness Questionnaire
  2. aValues are unstandardized Betas;* Significant at p < .05; ** Significant at p < .01; *** Significant at p < .001