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Adapting a clinical comorbidity index for use with ICD-9-CM administrative databases.
Administrative databases are increasingly used for studying outcomes of medical care. Valid inferences from such data require the ability to account for disease severity and comorbid conditions. WeExpand
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Estimates of the prevalence of arthritis and selected musculoskeletal disorders in the United States.
OBJECTIVE To provide a single source for the best available estimates of the national prevalence of arthritis in general and of selected musculoskeletal disorders (osteoarthritis, rheumatoidExpand
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Estimates of the prevalence of arthritis and other rheumatic conditions in the United States. Part II.
OBJECTIVE To provide a single source for the best available estimates of the US prevalence of and number of individuals affected by osteoarthritis, polymyalgia rheumatica and giant cell arteritis,Expand
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Release from prison--a high risk of death for former inmates.
BACKGROUND The U.S. population of former prison inmates is large and growing. The period immediately after release may be challenging for former inmates and may involve substantial health risks. WeExpand
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Outcome Measures for Low Back Pain Research: A Proposal for Standardized Use
Study Design. An international group of back pain researchers considered recommendations for standardized measures in clinical outcomes research in patients with back pain. Objectives. To promoteExpand
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Assessing the responsiveness of functional scales to clinical change: an analogy to diagnostic test performance.
We propose that health or functional status scales be viewed as "diagnostic tests" for discriminating between improved and unimproved patients, with receiver operating characteristic curves describing a scale's ability to detect improvement. Expand
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Generic and Disease-Specific Measures in Assessing Health Status and Quality of Life
Application of generic and specific measures of health status and quality of life to different diseases, conditions, states, and populations is increasing. Four strategies for using these measuresExpand
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Low back pain.
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Trends, major medical complications, and charges associated with surgery for lumbar spinal stenosis in older adults.
CONTEXT In recent decades, the fastest growth in lumbar surgery occurred in older patients with spinal stenosis. Trials indicate that for selected patients, decompressive surgery offers an advantageExpand
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Expenditures and health status among adults with back and neck problems.
CONTEXT Back and neck problems are among the symptoms most commonly encountered in clinical practice. However, few studies have examined national trends in expenditures for back and neck problems orExpand
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