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BMC Psychiatry

, 17:195

Social psychiatry, therapy and provision of mental health care

Abstract

BackgroundEarly dramatic treatment response suggests a subset of patients who respond to treatment before most of it has been offered. These early responders tend to be over represented among those who are well at termination and at follow-up. Early response patterns in psychotherapy have been investigated only for a few of mental disorders so far. The main aim of the current study was to examine early response after five therapy-preparing sessions of a cognitive behavior therapy CBT for syndromes of medically unexplained symptoms MUS.

MethodsIn the context of a randomized, waiting-list controlled trial 48 patients who suffered from ≥3 MUS over ≥6 months received 5 therapy-preparing sessions and 20 sessions of CBT for somatoform disorders. They completed self-report scales of somatic symptom severity SOMS-7 T, depression BDI-II, anxiety BSI, illness anxiety and behavior IAS at pre-treatment, after 5 therapy-preparing sessions FU-5P and at therapy termination FU-20 T.

ResultsThe current analyses are based on data from the treatment arm only. Repeated measure ANOVAs revealed a significant decrease of depression d = 0.34, anxiety d = 0.60, illness anxiety d = 0.38 and illness behavior d = 0.42, but no change of somatic symptom severity d = −0.03 between pre-treatment and FU-5P. Hierarchical linear multiple regression analyses showed that symptom improvements between pre-treatment and FU-5P predict a better outcome at therapy termination for depression and illness anxiety, after controlling for pre-treatment scores. Mixed-effect ANOVAs revealed significant group*time interaction effects indicating differences in the course of symptom improvement over the therapy between patients who fulfilled a reliable change i.e., early response during the 5 therapy-preparing sessions and patients who did not reach an early reliable change. Demographic or clinical variables at pre-treatment were not significantly correlated with differential scores between pre-treatment and FU-5P −.23 ≤ r ≤ .23.

ConclusionsDue to several limitations e.g., small sample size, lack of a control group the results of this study have to be interpreted cautiously. Our findings show that reliable changes in regard to affective-cognitive and behavioral variables can take place very early in CBT of patients with distressing MUS. These early changes seem to be predictive of the outcome at therapy termination. Future studies are needed in order to replicate our results, and to identify mechanisms of these early response patterns in somatoform patients.

Trial registrationISRCTN. ISRCTN17188363. Registered retrospectively on 29 March 2007.

KeywordsEarly response Cognitive-behavior therapy Medically unexplained symptoms CBT MUS AbbreviationsrmANOVArepeated measure analysis of variance

BDI-IIBeck Depression Inventory-II

BMIBody Mass Index

BSIBrief Symptom Inventory

CBTCognitive-behavior therapy

DSM-IV-−5Diagnostic and Statistical Manual for Mental Disorders, 4th-5th revision

FU-5P-−20 TFollow-up assessment after 5 therapy-preparing sessions-20 therapy sessions

IBSIrritable bowel syndrome

ICD-10International Classification of Diseases, 10th revision

MDDMajor depressive disorder

MUSMedically unexplained symptoms

RCIReliable change index

RCI+-−Subgroup which fulfilled- did not fulfill the reliable change index

RCTRandomized controlled trial

RGSResidual gain score

SOMS-7 TScreening for Somatoform Disorders-7 T





Author: Maria Kleinstäuber - Michael J. Lambert - Wolfgang Hiller

Source: https://link.springer.com/







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