Baseline psychological inflexibility moderates the outcome pain interference in a randomized controlled trial on internet-based acceptance and commitment therapy for chronic pain
McCracken, Lance M.
FacultiesFakultät für Ingenieurwissenschaften, Informatik und Psychologie
InstitutionsInstitut für Psychologie und Pädagogik
Journal of Clinical Medicine ; 8 (2018), 1. - Art.-Nr. 24. - eISSN 2077-0383
Link to publicationhttps://dx.doi.org/10.3390/jcm8010024
Link to original publicationhttps://dx.doi.org/10.3390/jcm8010024
LicenseCC BY 4.0 International
This study re-investigated data of a randomized controlled trial on Internet-based Acceptance and Commitment Therapy for chronic pain (ACTonPain). Baseline psychological inflexibility was examined as a moderator of the outcome pain interference. In the ACTonPain trial, participants with chronic pain were randomized to one of three conditions: guided Internet-based ACT (n = 100), unguided Internet-based ACT (n = 101), and waitlist (n = 101). Moderation analyses were performed with the SPSS macro PROCESS. Pain interference according to the Multidimensional Pain Inventory (MPI) was the primary outcome in this trial, and the potential moderator psychological inflexibility was measured with the Acceptance and Action Questionnaire (AAQ-II). Psychological inflexibility at baseline moderated the outcome between guided Internet-based ACT and waitlist 9-weeks as well as 6-months after randomization. (both p < 0.05). Between unguided Internet-based ACT and waitlist, psychological inflexibility moderated the outcome 6-months after randomization (p < 0.05). Internet-based ACT was superior to waitlist for participants with less psychological inflexibility at baseline, but Internet-based ACT became increasingly comparable to waitlist at higher AAQ-II baseline values. Future research should investigate whether the results can be replicated in more individualized and tailored face-to-face settings.
Subject HeadingsRigidität [GND]
Akzeptanz- und Commitment Therapie [GND]
Chronischer Schmerz [GND]
Rigidity (Psychology) [LCSH]
Chronic pain [LCSH]
Acceptance and commitment therapy [MeSH]
Emotional adjustment [MeSH]