LDER AMERICANS COMprise about 13% of the US population, yet account for 18% of all suicide deaths. 1 Among adults who attempt suicide, the elderly are most likely to die as a result. 2 Recent national reports emphasize the public health need for intervention trials to reduce the risk for suicide in late life. 3,4 This article presents initial outcomes from the multisite, randomized trial known as PROSPECT (Prevention of Suicide in Primary Care Elderly: Collaborative Trial). PROSPECT tested the impact of a primary carebased intervention on reducing major risk factors for suicide in late life. Primary care practices were important to study because the majority of older adults who die by suicide have seen their physician within months of their death. 5,6 PROSPECT approached suicide risk reduction from a public health perspective by targeting factors that are strongly related to suicide risk, common in primary care, and malleable. 7 Depression is the principal risk factor for suicide Author Affiliations and Financial Disclosures are listed at the end of this article.
Patients' perceptions of stigma at the start of treatment influence their subsequent treatment behavior. Stigma is an appropriate target for intervention aimed at improving treatment adherence and outcomes.
Context
Little is known about prevalence rates of DSM-IV disorders across age strata of older adults, including common conditions such as individual and coexisting mood and anxiety disorders.
Objective
To determine nationally representative estimates of 12-month prevalence rates of mood, anxiety, and comorbid mood-anxiety disorder across young-old, mid-old, old-old, and oldest old community-dwelling adults.
Design and Setting
The National Comorbidity Survey Replication (NCS-R) is a population-based probability sample of 9282 participants 18 years and older, conducted between February 2001 and April 2003. The NCS-R survey used the fully structured World Health Organization World Mental Health Survey version of the Composite International Diagnostic Interview.
Participants
We studied the 2575 participants 55 years and older who were part of NCS-R (43% 55-64; 32% 65-74; 20% 75-84; 5% ≥85 years). This included only non-institutionalized adults, as all NCS-R participants resided in households within the community.
Main Outcome Measures
Twelve-month prevalence of mood disorders (MDD, dysthymia, bipolar disorder), anxiety disorders (panic disorder, agoraphobia, specific phobia, social phobia, generalized anxiety disorder, posttraumatic stress disorder), and coexisting mood-anxiety disorder were assessed using DSM-IV criteria. Prevalence rates were weighted to adjust for the complex design in order to infer generalizability to the U.S. population.
Results
The likelihood of having a mood, anxiety, or combined mood-anxiety disorder generally showed a pattern of decline with age (P < .05). Twelve-month disorders showed higher rates in women compared to men; a statistically significant trend with age. In addition, anxiety disorders were as high if not higher than mood disorders across age groups (overall 12-month rates: mood=5% and anxiety=12%). No differences were found between race/ethnicity groups.
Conclusions
Prevalence rates of DSM-IV mood and anxiety disorders in late life tend to decline with age, but remain very common; especially in women. These results highlight the need for intervention and prevention strategies.
Perceived stigma associated with mental illness and individuals' views about the illness play an important role in adherence to treatment for depression. Clinicians' attention to psychological barriers early in treatment may improve medication adherence and ultimately affect the course of illness.
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