Randomized pilot trial of cognitive-behavioral therapy and acceptance-based behavioral therapy in the treatment of Spanish-speaking Latino primary care patients with generalized anxiety disorder.

The evidence base supporting the usefulness of traditional cognitive-behavioral therapy (CBT) and newer acceptance-based CBT treatments for generalized anxiety disorder (GAD) has grown over the past decades. GAD is prevalent among several Latino subgroups, particularly Puerto Ricans. However, there remains uncertainty regarding the appropriateness of these interventions for Spanish-speaking Latinos since they have been routinely excluded in both efficacy and effectiveness studies. As an initial step to bridge this gap, this pilot study examined the potential efficacy of two CBT interventions for GAD, traditional CBT and acceptance-based behavioral therapy (ABBT), in a sample of Spanish-speaking Latinos. Ninety primary care patients with GAD were randomly assigned to receive CBT (n=30), ABBT (n=30), or treatment as usual (TAU) (n=30). Excessive worry, the core feature of GAD, was assessed with the Penn State Worry Questionnaire (PSWQ), which is considered the gold standard measure of GAD-related worry. At follow-up, PSWQ scores for participants in the CBT and ABBT groups were statistically lower than those of the TAU group and statistically comparable to each other. CBT and ABBT reduced worry level to a greater degree than usual care by follow-up. Our findings provide preliminary, yet crucial data, which support the potential of both interventions targeting GAD symptoms among Spanish-speaking Latino primary care patients.