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BMC Psychiatry. 2012 Nov 20;12:202. doi: 10.1186/1471-244X-12-202.

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

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.

PMID:
23164260
PMCID:
PMC3539997
DOI:
10.1186/1471-244X-12-202
[Indexed for MEDLINE]
Free PMC Article
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