| 1. |
- Johansson, Linda, et al.
(författare)
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Stroop interference for food- and body-related words : A meta-analysis
- 2005
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Ingår i: Eating Behaviors. - : Elsevier BV. - 1471-0153 .- 1873-7358. ; 6:3, s. 271-281
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Tidskriftsartikel (refereegranskat)abstract
- According to cognitive theories of eating disorders, biased information processing in favour of dysfunctional attitudes about food and body appearance plays a vital role in the development and maintenance of such disorders. Data from 27 studies evaluating Stroop interference for food- and body-related words with negative overtones were included in a meta-analysis in order to investigate whether such processing biases are specific to eating disordered samples. Participants were females characterised as eating disordered, non-eating disordered but nevertheless over-concerned with body appearance and eating, and normal controls. Mean Stroop interference for eating disordered females was of medium effect size (Cohen's d=0.48) and significantly larger than for both non-eating disordered females concerned with body appearance and eating, and normal control females (both d=0.21). Stroop interference for eating disordered females was thus of fairly modest magnitude where it was unclear whether such interference is specific to this sample. © 2004 Elsevier Ltd. All rights reserved.
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| 2. |
- Johansson, Linda, et al.
(författare)
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The role of sensitivity to external food cues in attentional allocation to food words on dot probe and Stroop tasks
- 2004
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Ingår i: Eating Behaviors. - 1471-0153 .- 1873-7358. ; 5:3, s. 261-271
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Tidskriftsartikel (refereegranskat)abstract
- The role of sensitivity of external food cues in producing attentional bias toward food-, body-weight-, and shape-related words on the Stroop and the dot probe tasks was examined. Contrary to expectations, individuals high in responsiveness to external food cues directed attention away from food words, whereas individuals low in responsiveness to external food cues directed their attention toward food words on the dot probe task. No significant differences were found between the groups high and low in sensitivity to external food cues for body words on the dot probe task or for food or body words on the Stroop task. Results are discussed with reference to theoretical views of differences between the Stroop and the dot probe tasks.
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| 3. |
- Cristea, Ioana A, et al.
(författare)
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The effects of cognitive behavior therapy for adult depression on dysfunctional thinking : A meta-analysis.
- 2015
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Ingår i: Clinical Psychology Review. - : Elsevier BV. - 0272-7358 .- 1873-7811. ; 42, s. 62-71
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: It is not clear whether cognitive behavior therapy (CBT) works through changing dysfunctional thinking. Although several primary studies have examined the effects of CBT on dysfunctional thinking, no meta-analysis has yet been conducted.METHOD: We searched for randomized trials comparing CBT for adult depression with control groups or with other therapies and reporting outcomes on dysfunctional thinking. We calculated effect sizes for CBT versus control groups, and separately for CBT versus other psychotherapies and respectively, pharmacotherapy.RESULTS: 26 studies totalizing 2002 patients met inclusion criteria. The quality of the studies was less than optimal. We found a moderate effect of CBT compared to control groups on dysfunctional thinking at post-test (g=0.50; 95% CI: 0.38-0.62), with no differences between the measures used. This result was maintained at follow-up (g=0.46; 95% CI: 0.15-0.78). There was a strong association between the effects on dysfunctional thinking and those on depression. We found no significant differences between CBT and other psychotherapies (g=0.17; p=0.31), except when restrict in outcomes to the Dysfunctional Attitudes Scale (g=0.29). There also was no difference between CBT and pharmacotherapy (g=0.04), though this result was based on only 4 studies.DISCUSSION: While CBT had a robust and stable effect on dysfunctional thoughts, this was not significantly different from what other psychotherapies or pharmacotherapy achieved. This result can be interpreted as confirming the primacy of cognitive change in symptom change, irrespective of how it is attained, as well as supporting the idea that dysfunctional thoughts are simply another symptom that changes subsequent to treatment.
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| 4. |
- Cuijpers, Pim, et al.
(författare)
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Psychological treatment of depression in inpatients: A systematic review and meta-analysis
- 2011
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Ingår i: CLINICAL PSYCHOLOGY REVIEW. - : PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND. - 0272-7358 .- 1873-7811. ; 31:3, s. 353-360
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Forskningsöversikt (refereegranskat)abstract
- Research on psychological treatment of depression in inpatients is not conclusive, with some studies finding clear positive effects and other studies finding no significant benefit compared to usual care or structured pharmacotherapy. The results of a meta-analysis investigating how effective psychological treatment is for depressed inpatients are presented. A systematic search in bibliographical databases resulted in 12 studies with a total of 570 respondents. This set of studies had sufficient statistical power to detect small effect sizes. Psychological treatments had a small (g = 0.29), but statistically significant additional effect on depression compared to usual care and structured pharmacological treatments only. This corresponded with a numbers-needed-to-be-treated of 6.17. Heterogeneity was zero in most analyses, and not significant in all analyses. There was no indication for significant publication bias. Effects were not associated with characteristics of the population, the interventions and the design of the studies. Although the number of studies was small, and the quality of many studies was not optimal, it seems safe to conclude that psychological treatments have a small but robust effect on depression in depressed inpatients. More high-quality research is needed to verify these results.
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| 5. |
- Cuijpers, Pim, et al.
(författare)
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Psychological treatment of generalized anxiety disorder : A meta-analysis
- 2014
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Ingår i: Clinical Psychology Review. - : Elsevier. - 0272-7358 .- 1873-7811. ; 34:2, s. 130-140
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Tidskriftsartikel (refereegranskat)abstract
- Recent years have seen a near-doubling of the number of studies examining the effects of psychotherapies for generalized anxiety disorder (GAD) in adults. The present article integrates this new evidence with the older literature through a quantitative meta-analysis. A total of 41 studies (with 2132 patients meeting diagnostic criteria for GAD) were identified through systematic searches in bibliographical databases, and were included in the meta-analysis. Most studies examined the effects of cognitive behavior therapy (CBT). The majority of studies used waiting lists as control condition. The pooled effect of the 38 comparisons (from 28 studies) of psychotherapy versus a control group was large (g=0.84; 95% CI: 0.71-0.97) with low to moderate heterogeneity. The effects based on self-report measures were somewhat lower than those based on clinician-rated instruments. The effects on depression were also large (g=0.71; 95% CI: 0.59-0.82). There were some indications for publication bias. The number of studies comparing CBT with other psychotherapies (e.g., applied relaxation) or pharmacotherapy was too small to draw conclusions about comparative effectiveness or the long-term effects. There were some indications that CBT was also effective at follow-up and that CBT was more effective than applied relaxation in the longer term.
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| 6. |
- Cuijpers, Pim, et al.
(författare)
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Psychotherapy for chronic major depression and dysthymia: A meta-analysis
- 2010
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Ingår i: Clinical Psychology Review. - : Elsevier BV. - 0272-7358 .- 1873-7811. ; 30:1, s. 51-62
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Forskningsöversikt (refereegranskat)abstract
- Although several studies have examined the effects of psychotherapy on chronic depression and dysthymia, no meta-analysis has been conducted to integrate results of these studies. We conducted a meta-analysis of 16 randomized trials examining the effects of psychotherapy on chronic depression and dysthymia. We found that psychotherapy had a small but significant effect (d=0.23) on depression when compared to control groups. Psychotherapy was significantly less effective than pharmacotherapy in direct comparisons (d=-031), especially SSRIs, but that this finding was wholly attributable to dysthymic patients (the studies examining dysthymia patients were the same studies that examined SSRIs). Combined treatment was more effective than pharmacotherapy alone (d=0.23) but even more so with respect to psychotherapy alone (d=0.45), although again this difference may have reflected the greater proportion of dysthymic samples in the latter. No significant differences were found in drop-out rates between psychotherapy and the other conditions. We found indications that at least 18 treatment sessions are needed to realize optimal effects of psychotherapy. We conclude that psychotherapy is effective in the treatment of chronic depression and dysthymia but probably not as effective as pharmacotherapy (particularly the SSRIs).
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| 7. |
- Cuijpers, Pim, et al.
(författare)
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Self-reported versus clinician-rated symptoms of depression as outcome measures in psychotherapy research on depression: A meta-analysis
- 2010
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Ingår i: CLINICAL PSYCHOLOGY REVIEW. - : Elsevier Science B.V., Amsterdam.. - 0272-7358 .- 1873-7811. ; 30:6, s. 768-778
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Forskningsöversikt (refereegranskat)abstract
- It is not well-known whether self-report measures and clinician-rated instruments for depression result in comparable outcomes in research on psychotherapy. We conducted a meta-analysis in which randomized controlled trials were included examining the effects of psychotherapy for adult depression. Only studies were included in which both a self-report and a clinician-rated instrument were used. We calculated the effect size (Hedges g) based on the self-report measures, the effect size based on the clinician-rated instruments, and the difference between these two effect sizes (Delta g). A total of 48 studies including a total of 2462 participants was included in the meta-analysis. The differential effect size was Delta g=0.20 (95% CI: 0.10-0.30), indicating that clinician-rated instruments resulted in a significantly higher effect size than self-report instruments from the same studies. When we limited the effect size analysis to those studies comparing the HRSD with the BDI, the differential effect was somewhat smaller, but still statistically significant (Delta g=0.15; 95% CI: 0.03-0.27). This meta-analysis has made it clear that clinician-rated and self-report measures of improvement following psychotherapy for depression are not equivalent. Different symptoms may be more suitable for self-report or ratings by clinicians and in clinical trials it is probably best to include both.
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| 8. |
- Cuijpers, Pim, et al.
(författare)
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The efficacy of non-directive supportive therapy for adult depression : A meta-analysis
- 2012
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Ingår i: Clinical Psychology Review. - : Elsevier. - 0272-7358 .- 1873-7811. ; 32:4, s. 280-291
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Tidskriftsartikel (refereegranskat)abstract
- The effects of non-directive supportive therapy (NDST) for adult depression have been examined in a considerable number of studies, but no meta-analysis of these studies has been conducted. We selected 31 studies on NDST from a comprehensive database of trials, examining psychotherapies for adult depression, and conducted meta-analyses in which NDST was compared with control groups, other psychotherapies and pharmacotherapy. We found that NDST is effective in the treatment of depression in adults (g=0.58; 95% CI: 0.45-0.72). NDST was less effective than other psychological treatments (differential effect size g=-0.20; 95% CI: -0.32 to -0.08, p<0.01), but these differences were no longer present after controlling for researcher allegiance. We estimated that extra-therapeutic factors (those processes operating in waiting-list and care-as-usual controls) were responsible for 33.3% of the overall improvement, non-specific factors (the effects of NDST compared with control groups) for 49.6%, and specific factors (the effects of NDST compared with other therapies) for 17.1%. NDST has a considerable effect on symptoms of depression. Most of the effect of therapy for adult depression is realized by non-specific factors, and our results suggest that the contribution of specific effects is limited at best.
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| 9. |
- Hesser, Hugo, 1982-, et al.
(författare)
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A systematic review and meta-analysis of randomized controlled trials of cognitive-behavioral therapy for tinnitus distress
- 2011
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Ingår i: Clinical Psychology Review. - : Elsevier. - 0272-7358 .- 1873-7811. ; 31:4, s. 545-553
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Forskningsöversikt (refereegranskat)abstract
- Tinnitus is defined as a sound in the ear(s) and/or head without external origin and is a serious health concern for millions worldwide. The aim of the present study was to determine whether Cognitive Behavior Therapy (CBT) is effective in reducing distress associated with tinnitus. Randomized, controlled trials that assessed the efficacy of CBT for tinnitus-related distress in adults were identified by searching electronic databases (PsychINFO, PubMed, the Cochrane Library), and by manual searches. Fifteen studies (total of 1091 participants) were included in the meta-analysis. CBT compared with a passive and active control at post-assessment yielded statistically significant mean effect sizes for tinnitus-specific measures (Hedges's g = 0.70. and Hedges's g = 0.44, respectively). The average weighted pre-to-follow-up effect size for the CBT group suggested that these effects were maintained over time. Smaller but yet statistically significant effects of CBT were found for mood outcome measures. Characteristics of the studies were unrelated to effect sizes. Methodological rigor, publication bias, and a series of sensitivity analyses did not influence the findings. The results suggest that CBT is an effective treatment of tinnitus distress. However, caution is warranted given that few large-scale, well-controlled trials were identified.
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| 10. |
- Karyotaki, Eirini, et al.
(författare)
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Do guided internet-based interventions result in clinically relevant changes for patients with depression? : An individual participant data meta-analysis
- 2018
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Ingår i: Clinical Psychology Review. - : Elsevier. - 0272-7358 .- 1873-7811. ; 63, s. 80-92
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Forskningsöversikt (refereegranskat)abstract
- Little is known about clinically relevant changes in guided Internet-based interventions for depression. Moreover, methodological and power limitations preclude the identification of patients' groups that may benefit more from these interventions. This study aimed to investigate response rates, remission rates, and their moderators in randomized controlled trials (RCTs) comparing the effect of guided Internet-based interventions for adult depression to control groups using an individual patient data meta-analysis approach. Literature searches in PubMed, Embase, PsycINFO and Cochrane Library resulted in 13,384 abstracts from database inception to January 1, 2016. Twenty-four RCTs (4889 participants) comparing a guided Internet-based intervention with a control group contributed data to the analysis. Missing data were multiply imputed. To examine treatment outcome on response and remission, mixed-effects models with participants nested within studies were used. Response and remission rates were calculated using the Reliable Change Index. The intervention group obtained significantly higher response rates (OR = 2.49, 95% CI 2.17-2.85) and remission rates compared to controls (OR = 2.41, 95% CI 2.07-2.79). The moderator analysis indicated that older participants (OR = 1.01) and native-born participants (1.66) were more likely to respond to treatment compared to younger participants and ethnic minorities respectively. Age (OR = 1.01) and ethnicity (1.73) also moderated the effects of treatment on remission.Moreover, adults with more severe depressive symptoms at baseline were more likely to remit after receiving intemet-based treatment (OR = 1.19). Guided Internet-based interventions lead to substantial positive treatment effects on treatment response and remission at post-treatment. Thus, such interventions may complement existing services for depression and potentially reduce the gap between the need and provision of evidence-based treatments.
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