ExploreFinding
Finding improvement
CBT significantly improved worry severity compared with enhanced usual care at 3 months post-treatment, with mean PSWQ scores of 45.6 (CBT) vs 54.4 (EUC), p<.0001, and the improvement was maintained over 12-month follow-up.
Effect sizePSWQ 45.6 vs 54.4
CI95% CI 41.3 to 47.8 (CBT) vs 95% CI 51.4 to 57.3 (EUC)
Follow-up12 months
ComparatorEnhanced usual care (biweekly supportive phone calls for 3 months plus routine primary care)
Effect summaryimprovement; PSWQ 45.6 vs 54.4; CI: 95% CI 41.3 to 47.8 (CBT) vs 95% CI 51.4 to 57.3 (EUC)
Effect modifiers[{"modifier": "treatment expectancy", "interaction_p": "", "direction": "null", "stratum_details": "CBT expectancy 78% (95% CI 74-83) vs EUC 66% (95% CI 58-74, p=.007). When expectancies added as covariate, PSWQ group effect remained significant (p<.001).", "plain_language": "Even though CBT patients expected more improvement than EUC patients, the worry improvement from CBT held up even after accounting for those higher expectations.", "annotation_notes": "Expectancies were significantly different between groups but did not explain the PSWQ treatment effect. However, expectancies did reduce significance for BDI and MCS."}]

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Source

PMC3328789
Cognitive Behavior Therapy for Generalized Anxiety Disorder Among Older Adults in Primary Care: A Randomized Clinical Trial
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