Effects of a Brief Transdiagnostic Cognitive Behavioural Group Therapy on Disorder Specific Symptoms

Cognitive processes associated with emotional disorders: implications for efficient psychological treatments

BACKGROUND

Emotional disorders (EDs) are the most prevalent worldwide. Despite psychotherapies are their treatment of choice, there are difficulties to apply them properly in mental health services. Since literature shows that cognitive processes are associated with anxiety and depressive symptoms, more information is needed in order to improve psychological treatments.

AIMS

To determine the relation between cognitive factors with specific and non-specific ED symptoms in order to promote the development of accurate psychological treatments.

METHODS

We analyzed the relation between rumination, worry, and metacognition with generalized anxiety, panic, and depression disorder symptoms from a clinical sample of 116 individuals through correlation and linear regression analyses.

RESULTS

Although each specific disorder had a closer link with a particular cognitive process, all general ED symptoms were associated with the three cognitive factors studied.

CONCLUSIONS

For "pure" disorders, targeting a concrete cognitive process might be an optimal therapeutic option. However, due to the high comorbidity among EDs, we support the dissemination of the transdiagnostic treatment approach in which all cognitive factors are taken into account.

Evaluation of mechanism of change in transdiagnostic cognitive behaviour therapy using single case experimental design

BACKGROUND AND OBJECTIVES

Transdiagnostic mechanisms of change (txMOC) specific to cognitive behaviour therapy are poorly understood. Salkovskis (1996) proposed one such mechanism in terms of the shift towards an alternative, less negative view of their problems or cognitive flexibility. This hypothesis has been described as involving a shift in beliefs, from "theory A″ to "theory B". The objective of this research was to evaluate this hypothesis.

METHODS

Effectiveness of a novel txCBT and temporal changes in process and symptom measures were evaluated using a non-concurrent multiple baseline design and Tau-U calculations with thirteen participants (five with obsessive-compulsive disorder, two with panic disorder with agoraphobia and six with major depressive disorder). As a secondary analysis authors calculated Kendall's - Tau correlation between process and symptom measures, performed the Wilcoxon signed-rank test to assess treatment modules effect on negative thought and calculated Reliable change index (RCI).

RESULTS

The txCBT was clearly effective for eight participants. The results varied dependent on the stimuli evaluated as negative or threatening. Level and trend of the ratings of belief in theory A followed the level and trend of symptom measures to a greater extent than the (inverse) level and trend of belief in theory B.

LIMITATIONS

Only thirteen participants were recruited and evaluated.

CONCLUSIONS

The results are consistent with the view that effective treatment may involve a txMOC characterized by the ability to shift from a relatively fixed negative view of their experience to a less negative psychologically focused alternative.

Transdiagnostic group cognitive behavioural therapy for emotional disorders in primary care: the results of the PsicAP randomized controlled trial

BACKGROUND

Emotional disorders are highly prevalent in primary care. We aimed to determine whether a transdiagnostic psychological therapy plus treatment-as-usual (TAU) is more efficacious than TAU alone in primary care adult patients.

METHODS

A randomized, two-arm, single-blind clinical trial was conducted in 22 primary care centres in Spain. A total of 1061 adult patients with emotional disorders were enrolled. The transdiagnostic protocol (n = 527) consisted of seven 90-min sessions (8-10 patients) delivered over a 12-14-week period. TAU (n = 534) consisted of regular consultations with a general practitioner. Primary outcome measures were self-reported symptoms of anxiety, depression, and somatizations. Secondary outcome measures were functioning and quality of life. Patients were assessed at baseline, post-treatment, and at 3, 6, and 12 months. Intention-to-treat and per-protocol analyses were performed.

RESULTS

Post-treatment primary outcomes were significantly better in the transdiagnostic group compared to TAU (anxiety: p < 0.001; Morris's d = -0.65; depression: p < 0.001; d = -0.58, and somatic symptoms: p < 0.001; d = -0.40). These effects were sustained at the 12-month follow-up (anxiety: p < 0.001; d = -0.44; depression: p < 0.001; d = -0.36 and somatic symptoms: p < 0.001; d = -0.32). The transdiagnostic group also had significantly better outcomes on functioning (d = 0.16-0.33) and quality of life domains (d = 0.24-0.42), with sustained improvement at the 12-month follow-up in functioning (d = 0.25-0.39) and quality of life (d = 0.58-0.72). Reliable recovery rates showed large between-group effect sizes (d > 0.80) in favour of the transdiagnostic group after treatment and at the 12-month follow-up.

CONCLUSIONS

Adding a brief transdiagnostic psychological intervention to TAU may significantly improve outcomes in emotional disorders treated in primary care.

TRIAL REGISTRATION

isrctn.org identifier: ISRCTN58437086.

'You should always look at the washing machine without actually being in it!' Thematic framework analysis of patients' understanding of transdiagnostic cognitive behaviour therapy and its mechanisms

OBJECTIVE

Transdiagnostic cognitive behaviour therapy (TCBT) is an efficacious treatment for anxiety and depression, but its mechanisms of change remain poorly understood. The current study used thematic framework analysis to analyse how patients, recruited in a recent trial on transdiagnostic group CBT (TGCBT), understood the treatment and its mechanisms.

DESIGN

Cross-sectional thematic framework analysis.

METHOD

The sample included 24 participants suffering from anxiety and/or depression, divided into two groups by treatment efficacy (i.e., group doing well and group doing not so well) in order to evaluate whether different understandings of the treatment affected its efficacy. The participants were interviewed and completed self-report measures. They were encouraged to discuss what they believed to be helpful and unhelpful in the TGCBT and what they believed to be the mechanisms of change in the treatment. Each interview was recorded, transcribed verbatim and themes were identified.

RESULTS

The analysis revealed four overarching themes and 18 subthemes. The overarching themes were as follows: Cognitive and behavioural flexibility, Awareness/understanding of symptoms and triggers, Therapeutic alliance and engagement, and finally Attitudes towards treatment. Four of the 18 subthemes corresponded to a differentiation between the groups: Cognitive flexibility and Comparison with others in the group on the one hand and Cognitive inflexibility and Negative attitudes towards treatment on the other.

CONCLUSION

The most important difference between the groups appeared to be CBT-specific, that is, cognitive flexibility that characterized the group doing well where thematic analysis did not indicate that other themes were important.

PRACTITIONER POINTS

Findings The analysis revealed four overarching themes and 18 subthemes, four of which corresponded to the difference between the two groups of participants based on treatment efficacy. The four differentiating subthemes were cognitive flexibility and comparison with others, which characterized the group doing well, and cognitive inflexibility and negative attitude towards treatment, which characterized the group doing less well. The theme evaluated as the most important for the efficacy of the transdiagnostic cognitive behaviour therapy and patients' understanding of the treatment was cognitive flexibility, which characterized the group doing well. Limitations Use of qualitative methodology restricts the generalizability of our results. Data are built on answers from only 24 participants.