Can self-rated health be used for risk prediction in patients with type 2 diabetes?
- Alison J. Hayes, Ph.D (alisonh{at}health.usyd.edu.au)1,
- Philip M. Clarke, Ph.D1,
- Paul G. Glasziou, Ph.D2,
- R. John Simes, FRACP3,
- Paul L. Drury, FRACP4 and
- Anthony C. Keech, FRACP3
- 1. Public Health, University of Sydney, NSW Australia
- 2. Primary Care, University of Oxford, United Kingdom
- 3. NHMRC Clinical Trials Centre, University of Sydney, NSW, Australia
- 4. Auckland Diabetes Centre, Auckland, New Zealand
Abstract
Objective: To investigate whether self-rated health using the EQ VAS is an independent predictor of vascular events and major complications in people with type 2 diabetes after controlling for standard clinical risk factors.
Research design and methods: The study is based on 7348 people with a mean follow-up of 2.4 years after completing the EQ-5D questionnaire. We used Cox proportional hazards modeling to estimate hazard ratios associated with EQ VAS scores after controlling for baseline covariates: age, sex, smoking status, diabetes duration, HbA1c, systolic blood pressure, body mass index, plasma lipids and prior clinical history.
Results: A 10 point higher EQ VAS score was associated with a 6% (95% CI:1,11) lower risk of vascular events, and a 22% (95% CI:15,28) lower risk of diabetic complications.
Conclusions: Self-rated health using the EQ VAS provides additional information on patient risk that is over and above that determined from clinical risk factors.
Footnotes
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- Received July 19, 2007.
- Accepted December 27, 2007.
- Copyright © American Diabetes Association
