Readiness to change and therapy outcomes of an innovative psychotherapy program for surgical patients: results from a randomized controlled trial

Henning Krampe, Anna-Lena Salz, Léonie F Kerper, Alexander Krannich, Tatjana Schnell, Klaus-Dieter Wernecke, Claudia D Spies, Henning Krampe, Anna-Lena Salz, Léonie F Kerper, Alexander Krannich, Tatjana Schnell, Klaus-Dieter Wernecke, Claudia D Spies

Abstract

Background: Readiness to change is a pivotal construct for psychotherapy research and a major target of motivational interventions. Our primary objective was to examine whether pre-treatment readiness to change moderated therapy effects of Bridging Intervention in Anesthesiology (BRIA), an innovative psychotherapy approach for surgical patients. This stepped care program aims at motivating and supporting surgical patients with mental disorders to engage in psychosocial mental health care.

Methods: The major steps of BRIA are two motivational interventions with different intensity. The first step of the program consists of preoperative computer-assisted psychosocial self-assessment including screening for psychological distress and automatically composed computerized brief written advice (BWA). In the second step, patients participate in postoperative psychotherapy sessions combining motivational interviewing with cognitive behavioural therapy (BRIA psychotherapy sessions). We performed regression-based moderator analyses on data from a recent randomized controlled trial published by our research group. The sample comprised 220 surgical patients with diverse comorbid mental disorders according to ICD-10. The most frequent disorders were mood, anxiety, substance use and adjustment disorders. The patients had a mean age of 43.31 years, and 60.90% were women. In a regression model adjusted for pre-treatment psychological distress, we investigated whether readiness to change moderated outcome differences between (1) the BRIA psychotherapy sessions and (2) no psychotherapy / BWA only.

Results: Multiple regression analyses showed that readiness to change moderated treatment effects regarding the primary outcomes "Participation in psychosocial mental health care options at month 6" (p = 0.03) and "Having approached psychosocial mental health care options at month 6" (p = 0.048) but not regarding the secondary outcome "Change of general psychological distress between baseline assessment and month 6" (p = 0.329). Probing the moderation effect with the Johnson-Neyman technique revealed that BRIA psychotherapy sessions were superior to BWA in patients with low to moderate readiness, but not in those with high readiness.

Conclusions: Readiness to change may act as moderator of the efficacy of psychosocial therapy. Combinations of motivational interviewing and cognitive behavioural therapy may be effective particularly in patients with a variety of mental disorders and low readiness to change.

Trial registration: clinicaltrials.gov Identifier: NCT01357694.

Keywords: Bridging Intervention in Anesthesiology (BRIA); Cognitive behavioural therapy (CBT); Motivational interviewing (MI); Surgical patients; University of Rhode Island Change Assessment (URICA).

Conflict of interest statement

Ethics approval and consent to participate

This study was approved by the Ethics Committee of the Charité – Universitätsmedizin Berlin [EA1/014/11]. All patients provided written informed consent.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

Unrelated to this work, CDS received grants AbbVie Deutschland GmbH & Co. KG; Aguettant Deutschland GmbH; AppAdventure; Aspect / Covidien; Arbeitsgemeinschaft industrieller Forschungsvereinigungen „Otto von Guericke “e. V. (AiF); Aridis Pharmaceutical Inc.; Baxter Deutschland GmbH, Berufsverband Deutscher Anästhesisten e. V. (BDA); Biotest AG; B. Braun Melsungen AG; Bundesministerium für Bildung und Forschung (BMBF); Carinopharm GmbH; Cytosorbents Europe GmbH; Delcath Systems, Inc.; Deutsche Forschungsgemeinschaft; Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ); Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR); Dr. F. Köhler Chemie GmbH; Drägerwerk AG & Co. KG; Dräger Medical Deutschland GmbH; Edwards Lifesciences Germany GmbH; Einstein Stiftung Berlin; European Commission Funding; European Society of Anaesthesiology; Fresenius Medical Care; Gemeinsamer Bundesausschuss (G-BA); Grünenthal GmbH; INC Research UK Ltd.; Infectopharm GmbH; Inner University Grants; J&P Medical Research Ltd.; La Jolla Pharmaceutical Company; Maquet Vertrieb und Service Deutschland GmbH; Masimo Europe Ltd.; Medtronic GmbH; Mundipharma; Novartis Pharma GmbH; Orion Pharma GmbH; Pfizer Pharma PFE GmbH; Pharmaceutical Research Associates GmbH; Philips Electronics Nederland B.V.; Pulsion Medical Systems SE; Sedana Medical Ltd.; Sintetica GmbH; Stifterverband / Non-Profit Society Promoting Science and Education; Westfälische Wilhelms-Universität Münster/DFG, WHOCC: In addition, Dr. Spies reports personal fees from B. Braun Melsungen AG; Fresenius Kabi; Georg Thieme Verlag, as well as a patent 10 2014 215,211.9 pending, a patent Application No. PCT/EP2015/067730 pending to Graft Gesellschaft von Architekten mbH, and a patent Application No. PCT/EP2015/067731 pending to Graft Gesellschaft von Architekten mbH.

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Figures

Fig. 1
Fig. 1
Flow of participants through the trial. + Numbers in brackets refer to patients lost to follow-up and drop outs concerning the secondary outcome. Numbers of patients lost to follow-up differ between primary and secondary outcomes because the primary outcome was assessed via a telephone interview, and the secondary outcome as a postal questionnaire. Kerper et al., Effects of an innovative psychotherapy program for surgical patients - Bridging Intervention in Anesthesiology: A randomized controlled trial. Anesthesiology 2015;123:148-59 [6]
Fig. 2
Fig. 2
Johnson-Neyman plots of the interaction between treatment allocation (BRIA psychotherapy sessions vs. BWA, N = 220) and readiness to change. a Participation in psychosocial mental health care options at month 6; b Having approached psychosocial mental health care options at month 6. The black continuous lines show the conditional effects of BRIA psychotherapy sessions for all values of readiness to change, and the dotted lines above and below indicate the corresponding 95% confidence intervals (CI). The gray vertical dashed lines identify the regions of significance, reaching from the lowest score until the score of readiness to change at which the lower 95% CI of the slope crosses the zero point. For all readiness values below, the effect of BRIA psychotherapy sessions is statistically significant

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