The consistency of various high blood pressure indicators based on questionnaire and physical measures data from the Canada Health Survey.

Several indicators of the presence of high blood pressure, taken from different parts of Canada Health Survey data, are compared at the individual respondent level to determine their consistency and their usefulness, alone or in combination, in measuring the prevalence of hypertension. The results demonstrate some systematic and substantial discrepancies among various high blood pressure indicators derived from questionnaire data, and between questionnaire data and physically measured blood pressure status.