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Intraindividual change in SF-36 in ambulatory clinic primary care patients predicted mortality and hospitalizations.

Fan VS, Au DH, McDonell MB, Fihn SD. Intraindividual change in SF-36 in ambulatory clinic primary care patients predicted mortality and hospitalizations. Journal of clinical epidemiology. 2004 Mar 1; 57(3):277-83.

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Abstract:

OBJECTIVE: We sought to determine whether change in SF-36 scores over time is associated with the risk of adverse outcomes. STUDY DESIGN AND SETTING: 7,702 participants in the Ambulatory Care Quality Improvement Project who completed a baseline and 1-year SF-36. Using logistic regression methods we estimated the 1-year risk of hospitalization and death based on previous 1-year changes in the physical (PCS) and mental (MCS) component summary scores. RESULTS: After adjusting for baseline PCS scores, age, VA hospital site, distance to VA, and comorbidity, a > 10-point decrease in PCS score was associated with an increased risk of death (OR 2.3, 95% CI 1.6-3.4) and hospitalization (OR 1.8, 1.4-2.2). An increased risk was also seen with a > 10-point decrease in the MCS (OR for death, 1.6, 1.1-2.3; OR for hospitalization 1.5, 1.2-1.8). CONCLUSION: Change in SF-36 PCS and MCS scores is associated with mortality and hospitalizations, and provides important prognostic information over baseline scores alone.





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