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Bringing Geriatricians to the Front Lines: Evaluation of a Quality Improvement Intervention in Primary Care

Department of Family and Community Medicine (JJF), University of California, Davis, Sacramento, CA
MacColl Institute for Healthcare Innovation (EHW), University of Washington, Seattle, WA
Center for Health Studies (MDL, LDM), University of Washington, Seattle, WA
Group Health Cooperative, Seattle, WA; and Department of Biostatistics (PJH), University of Washington, Seattle, WA

Correspondence: Corresponding author: Joshua J. Fenton, MD, MPH, Department of Family and Community Medicine, University of California, Davis, 4860 Y Street, Suite 2300, Sacramento, CA 95817 (E-mail: Joshua.fenton{at}ucdmc.ucdavis.edu)

Background: Frail elders often receive low-quality primary care, yet the optimal role of geriatricians in primary care settings remains uncertain. We evaluated the health utilization impacts of an innovative intervention emphasizing chronic disease self-management and physical activity promotion among frail elders in primary care.

Methods: The intervention was implemented within two primary care practices at a single clinic serving a large population of frail elders enrolled in a western Washington health plan. Subjects included older patients (age 65 years) with disproportionate baseline outpatient service use who attended two on-site visits with a geriatrician during which each received comprehensive assessment and a problem-solving intervention to enhance chronic disease self-management and promote physical activity (N = 146). Our evaluation had a retrospective matched cohort design. Controls receiving primary care at other health plan clinics were matched 3:1 to intervention subjects by sex and a propensity score (N = 437), which was computed using demographic, clinical, and health care utilization factors that were predictive of attending the intervention. Among intervention subjects and controls following the intervention, we compared relative rates of hospitalization, outpatient and specialty visits, nursing home admission, mortality, and prescription of selected high-risk medications, as well as total health care costs.

Results: From March 2002 to November 2003, the geriatrician evaluated 146 of 725 elderly subjects (20%) in the two primary care practices. During a mean follow-up of 1.3 years, intervention subjects had a reduced rate of hospitalization relative to matched controls (incidence rate ratio 0.57; 95% CI: 0.37 to 0.86; P < .01). Intervention and control subjects did not have significantly different rates of specialty visits, outpatient visits, nursing home admission, mortality, or high-risk prescriptions. Relative to matched controls during follow-up, total health care costs were 26.3% lower among intervention subjects (95% CI: 1.3%, 44.9%; P = .04).

Conclusions: Outpatient geriatric interventions emphasizing collaboration between geriatricians and primary care physicians, chronic disease self-management, and physical activity may reduce hospitalization risk and total health care costs among vulnerable elders.