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A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation

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Validation of a combined comorbidity index

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Principles and Practice of Radiation Oncology

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The effects of specific medical conditions on the functional limitations of elders in the Framingham Study.

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The diagnosis of ischaemic heart pain and intermittent claudication in field surveys.

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Self-reports and general practitioner information on the presence of chronic diseases in community dwelling elderly

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Validation of the Cumulative Illness Rating Scale in a Geriatric Residential Population

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The Fourth Stage of the Epidemiologic Transition: The Age of Delayed Degenerative Diseases

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Maintaining Mobility in Late Life. I. Demographic Characteristics and Chronic Conditions

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Estimates of Change in Chronic Disability and Institutional Incidence and Prevalence Rates in the U.S Elderly Population From the 1982, 1984, and 1989 National Long Term Care Survey

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Comparing Self-reported and Physician-reported Medical History

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Comorbidity and Its Impact on Disability

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Chronic Conditions That Lead to Functional Limitation in the Elderly

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The Duke severity of illness checklist (DUSOI) for measurement of severity and comorbidity

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Levels of Disability Among U.S. Adults With Arthritis

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Autonomy and well-being in the aging population: Concepts and design of the longitudinal aging study Amsterdam

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Recent, Present, and Future Health of American Adults

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The burden of chronic diseases in terms of disability, use of health care and healthy life expectancies

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Reliability of a measure of severity of illness: Acute physiology of chronic health evaluation—II

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Co-morbidity analysis: a strategy for understanding mortality, disability and use of health care facilities of older people.

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Living longer but doing worse: Assessing health status in elderly persons at two points in time in Manitoba, Canada, 1971 and 1983

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Lack of association between patients' measured burden of disease and risk for hospital readmission

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Evaluation of a Clinical Score for Prognostic Stratification of Elderly Stroke Patients

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New thinking and science on disability in mid- and late life

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Severity of Illness Measures Derived From the Uniform Clinical Data Set (UCDSS)

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Do HMOs Care For The Chronically Ill?

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Relationship between severity, costs and claims of hospitalized patients using the Severity of Illness Index

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