Lay providers can deliver effective cognitive behavior therapy for older adults with generalized anxiety disorder: a randomized trial.

BACKGROUND: The Institute of Medicine recommends developing a broader workforce of mental health providers, including nontraditional providers, to expand services for older adults. Cognitive behavior therapy (CBT) is effective for late-life generalized anxiety disorder (GAD), but no study has examined outcomes with delivery by lay providers working under the supervision of licensed providers. The current study examined the effects of CBT delivered by lay, bachelor-level providers (BLP) relative to Ph.D.-level expert providers (PLP), and usual care (UC) in older adults with GAD. METHODS: Participants were 223 older adults (mean age, 66.9 years) with GAD recruited from primary care clinics at two sites and assigned randomly to BLP (n = 76), PLP (n = 74), or UC (n = 73). Assessments occurred at baseline and 6 months. CBT in BLP and PLP included core and elective modules (3 months: skills training; 3 months: skills review) delivered in person and by telephone, according to patient choice. RESULTS: CBT in both BLP and PLP groups significantly improved GAD severity (GAD Severity Scale), anxiety (Spielberger State-Trait Anxiety Inventory; Structured Interview Guide for the Hamilton Anxiety Scale), depression (Patient Health Questionnaire), insomnia (Insomnia Severity Index), and mental health quality of life (Short-Form-12), relative to UC. Response rates defined by 20% reduction from pre- to posttreatment in at least three of four primary outcomes were higher for study completers in BLP and PLP relative to UC (BLP: 38.5%; PLP: 40.0%; UC: 19.1%). CONCLUSION: Lay providers, working under the supervision of licensed providers, can deliver effective CBT.

Cognitive behavior therapy for generalized anxiety disorder among older adults in primary care: a randomized clinical trial.

CONTEXT: Cognitive behavior therapy (CBT) can be effective for late-life generalized anxiety disorder (GAD), but only pilot studies have been conducted in primary care, where older adults most often seek treatment. OBJECTIVE: To examine effects of CBT relative to enhanced usual care (EUC) in older adults with GAD in primary care. DESIGN, SETTING, AND PARTICIPANTS: Randomized clinical trial recruiting 134 older adults (mean age, 66.9 years) from March 2004 to August 2006 in 2 primary care settings. Treatment was provided for 3 months; assessments were conducted at baseline, posttreatment (3 months), and over 12 months of follow-up, with assessments at 6, 9, 12, and 15 months. INTERVENTION: Cognitive behavior therapy (n = 70) conducted in the primary care clinics. Treatment included education and awareness, motivational interviewing, relaxation training, cognitive therapy, exposure, problem-solving skills training, and behavioral sleep management. Patients assigned to receive EUC (n = 64) received biweekly telephone calls to ensure patient safety and provide minimal support. MAIN OUTCOME MEASURES: Primary outcomes included worry severity (Penn State Worry Questionnaire) and GAD severity (GAD Severity Scale). Secondary outcomes included anxiety ratings (Hamilton Anxiety Rating Scale, Beck Anxiety Inventory), coexistent depressive symptoms (Beck Depression Inventory II), and physical/mental health quality of life (12-Item Short Form Health Survey). RESULTS: Cognitive behavior therapy compared with EUC significantly improved worry severity (45.6 [95% confidence interval {CI}, 43.4-47.8] vs 54.4 [95% CI, 51.4-57.3], respectively; P < .001), depressive symptoms (10.2 [95% CI, 8.5-11.9] vs 12.8 [95% CI, 10.5-15.1], P = .02), and general mental health (49.6 [95% CI, 47.4-51.8] vs 45.3 [95% CI, 42.6-47.9], P = .008). There was no difference in GAD severity in patients receiving CBT vs those receiving EUC (8.6 [95% CI, 7.7-9.5] vs 9.9 [95% CI, 8.7-11.1], P = .19). In intention-to-treat analyses, response rates defined according to worry severity were higher following CBT compared with EUC at 3 months (40.0% [28/70] vs 21.9% [14/64], P = .02). CONCLUSIONS: Compared with EUC, CBT resulted in greater improvement in worry severity, depressive symptoms, and general mental health for older patients with GAD in primary care. However, a measure of GAD severity did not indicate greater improvement with CBT. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00308724.

Enabling lay providers to conduct CBT for older adults: key steps for expanding treatment capacity.

The Institute of Medicine advocates the examination of innovative models of care to expand mental health services available for older adults. This article describes training and supervision procedures in a recent clinical trial of cognitive behavioral therapy (CBT) for older adults with generalized anxiety disorder (GAD) delivered by bachelor-level lay providers (BLPs) and to Ph.D.-level expert providers (PLPs). Supervision and training differences, ratings by treatment integrity raters (TIRs), treatment characteristics, and patient perceptions between BLPs and PLPs are examined. The training and supervision procedures for BLPs led to comparable integrity ratings, patient perceptions, and treatment characteristics compared with PLPs. These results support this training protocol as a model for future implementation and effectiveness trials of CBT for late-life GAD, with treatment delivered by lay providers supervised by a licensed provider in other practice settings.

Cognitive-behavioral therapy for late-life anxiety: Similarities and differences between Veteran and community participants.

Cognitive-behavioral therapy (CBT) is an evidence-based treatment for anxiety; however, a growing body of research suggests that CBT effect sizes are smaller in Veteran samples. The aim of this study was to perform secondary data analyses of a randomized controlled trial of CBT for late-life generalized anxiety disorder compared with treatment as usual (TAU) in a Veteran (n = 101) and community-based (n = 122) sample. Veterans had lower income and less education than community participants, greater severity on baseline measures of anxiety and depression, poorer physical health, and higher rates of psychiatric comorbidity. Treatment effects were statistically significant in the community sample (all ps < 0.01), but not in Veterans (all ps > 0.05). Further analyses in Veterans revealed that poorer perceived social support significantly predicted poorer outcomes (all ps < 0.05). Our results underscore the complexity of treating Veterans with anxiety, and suggest that additional work is needed to improve the efficacy of CBT for Veterans, with particular attention to social support.