Functional Health Literacy and the Risk of Hospital Admission Among Medicare Managed Care Enrollees
David W. Baker, MD, MPH,
Julie A. Gazmararian, PhD, MPH,
Mark V. Williams, MD,
Tracy Scott, PhD,
Ruth M. Parker, MD,
Diane Green, PhD,
Junling Ren, MEd and
Jennifer Peel, MPH
David W. Baker is with the Center for Health Care Research and Policy and the Department of Medicine, Case Western Reserve University at MetroHealth Medical Center; and the Department of EpidemiologyBiostatistics, Case Western Reserve University School of Medicine, Cleveland, Ohio. Julie A. Gazmararian, Tracy Scott, Diane Green, Junling Ren, and Jennifer Peel are with US Quality Algorithms Center for Health Care Research, Atlanta, Ga. Mark V. Williams and Ruth M. Parker are with the Department of Medicine, Emory University School of Medicine, Atlanta, Ga.
Correspondence: Requests for reprints should be sent to David W. Baker, MD, MPH, Northwestern University Medical School, Suite 200, 676 North St. Clair Street, Chicago, Illinois 60611 (e-mail: dwbaker{at}northwestern.edu).
Objectives. This study analyzed whether inadequate functionalhealth literacy is an independent risk factor for hospital admission.
Methods. We studied a prospective cohort of 3260 Medicare managedcare enrollees.
Results. Of the participants, 29.5% were hospitalized. The cruderelative risk (RR) of hospitalization was higher for individualswith inadequate literacy (n = 800; RR = 1.43; 95% confidenceinterval [CI] = 1.24, 1.65) and marginal literacy (n = 366;RR = 1.33; 95% CI = 1.09, 1.61) than for those with adequateliteracy (n = 2094). In multivariate analysis, the adjustedrelative risk of hospital admission was 1.29 (95% CI = 1.07,1.55) for individuals with inadequate literacy and 1.21 (95%CI = 0.97, 1.50) for those with marginal literacy.
Conclusions. Inadequate literacy was an independent risk factorfor hospital admission among elderly managed care enrollees.(Am J Public Health. 2002;92:12781283)
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