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Assessing Hypertension in the Canadian Study of Health and Aging

Published online by Cambridge University Press:  10 January 2005

Heather S. Davis ,
Heather R. Merry ,
Chris MacKnight  and
Kenneth Rockwood
Heather S. Davis
Affiliation:
Division of Geriatric Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
Heather R. Merry
Affiliation:
Division of Geriatric Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
Chris MacKnight
Affiliation:
Division of Geriatric Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
Kenneth Rockwood
Affiliation:
Division of Geriatric Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
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Abstract

We investigated the self-report hypertension variables in the CSHA, recorded in the screening questionnaire and the Self-Administered Risk Factor (SARF) questionnaire. The two questions showed high agreement (phi coefficient 0.83). Each was modestly but significantly associated with other simultaneous reports of heart disease and stroke, and with subsequent mortality. Only the SARF asked questions about treatment; controlling for treatment effects, five-year survival was longest among those with no hypertension and no treatment (mean survival time 1,645 days; 95% CI 1,632 to 1,658), and shortest for those with no reported hypertension who were receiving “antihypertensive” medications presumably prescribed for other cardiovascular disease (mean survival time 1,496 days; 95% CI 1,457 to 1,535). The SARF questions incorporating high blood pressure and treatment appear preferable to assess the risks associated with hypertension.

Type
DERIVED VARIABLES FOR THE CSHA
Information
International Psychogeriatrics , Volume 13 , Issue S1 , February 2001 , pp. 115 - 123
Copyright
© 2001 International Psychogeriatric Association

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