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Correcting and interpreting the effect of cognitive therapy versus exposure in anxiety disorders.

Ebrahim S, Bance S - BMC Psychiatry (2012)

Bottom Line: These were incorrectly meta-analysed.For PTSD, the SMD (95% CI) for short-term outcomes was -0.13 (-0.36, 0.11) and 0.05 (-0.22, 0.32) for long-term outcomes.However, correcting the errors did not change the interpretation of the findings considerably.

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ABSTRACT
Dr. Ougrin's evaluation of cognitive therapy versus exposure in anxiety disorders reported a standardised mean difference [SMD] (95% confidence interval [CI]) of 0.52 (0.37, 0.74) for short-term outcomes and 0.46 (0.29, 0.73) for long-term outcomes in social phobia, and 0.88 (0.69, 1.11) for short-term outcomes and 1.05 (0.80, 1.37) for long-term outcomes in posttraumatic stress disorder (PTSD). These were incorrectly meta-analysed. Upon re-analysis, we found that the correct SMD (95% CI) was -0.66 (-1.19, -0.14) for short-term outcomes and mean difference (95% CI) of -29.66 (-46.13, -13.19) on the Social Phobia subscale from the Social Phobia Anxiety Inventory for long-term outcomes in Social Phobia. For PTSD, the SMD (95% CI) for short-term outcomes was -0.13 (-0.36, 0.11) and 0.05 (-0.22, 0.32) for long-term outcomes. However, correcting the errors did not change the interpretation of the findings considerably.

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Corrected meta-analysis of Figure3in Ougrin (2011) “Cognitive therapy versus exposure for PTSD. Meta-analysis: short-term outcomes”.
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Figure 3: Corrected meta-analysis of Figure3in Ougrin (2011) “Cognitive therapy versus exposure for PTSD. Meta-analysis: short-term outcomes”.

Mentions: 1. In Figure3 in Ougrin (2011), the forest plot was incorrectly pooled as odds ratios when the effect sizes were in fact SMDs (see Table 2 in Ougrin). We found that the corrected SMD (95% CI) was −0.13 (−0.36, 0.11) for short-term outcomes in PTSD (Figure3).


Correcting and interpreting the effect of cognitive therapy versus exposure in anxiety disorders.

Ebrahim S, Bance S - BMC Psychiatry (2012)

Corrected meta-analysis of Figure3in Ougrin (2011) “Cognitive therapy versus exposure for PTSD. Meta-analysis: short-term outcomes”.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3539997&req=5

Figure 3: Corrected meta-analysis of Figure3in Ougrin (2011) “Cognitive therapy versus exposure for PTSD. Meta-analysis: short-term outcomes”.
Mentions: 1. In Figure3 in Ougrin (2011), the forest plot was incorrectly pooled as odds ratios when the effect sizes were in fact SMDs (see Table 2 in Ougrin). We found that the corrected SMD (95% CI) was −0.13 (−0.36, 0.11) for short-term outcomes in PTSD (Figure3).

Bottom Line: These were incorrectly meta-analysed.For PTSD, the SMD (95% CI) for short-term outcomes was -0.13 (-0.36, 0.11) and 0.05 (-0.22, 0.32) for long-term outcomes.However, correcting the errors did not change the interpretation of the findings considerably.

View Article: PubMed Central - HTML - PubMed

ABSTRACT
Dr. Ougrin's evaluation of cognitive therapy versus exposure in anxiety disorders reported a standardised mean difference [SMD] (95% confidence interval [CI]) of 0.52 (0.37, 0.74) for short-term outcomes and 0.46 (0.29, 0.73) for long-term outcomes in social phobia, and 0.88 (0.69, 1.11) for short-term outcomes and 1.05 (0.80, 1.37) for long-term outcomes in posttraumatic stress disorder (PTSD). These were incorrectly meta-analysed. Upon re-analysis, we found that the correct SMD (95% CI) was -0.66 (-1.19, -0.14) for short-term outcomes and mean difference (95% CI) of -29.66 (-46.13, -13.19) on the Social Phobia subscale from the Social Phobia Anxiety Inventory for long-term outcomes in Social Phobia. For PTSD, the SMD (95% CI) for short-term outcomes was -0.13 (-0.36, 0.11) and 0.05 (-0.22, 0.32) for long-term outcomes. However, correcting the errors did not change the interpretation of the findings considerably.

Show MeSH
Related in: MedlinePlus