Validity of Self-Reported High Blood Pressure among Black and White Seventh-Day Adventists
Journal Title: International Journal of Health Sciences and Research - Year 2017, Vol 7, Issue 7
Abstract
Background: Self-reported diagnosis of high blood pressure is frequently used to study representative samples of a population. Objective: Using a cross-sectional design, we examined the relationship between self-reported high blood pressure and clinical evidence for the disease, such as use of antihypertensive medications. Methods: A community-based sample of older Seventh-day Adventist adults aged 50 years and older (n = 457) was recruited from a prospective cohort study. Confirmed high blood pressure was defined as using an antihypertensive medication, having a systolic blood pressure ≥ 140 mmHg,or a diastolic blood pressure ≥ 90 mmHg. Results: There were 236 (52.0%) out of 457 participants with self-reported high blood pressure. Blacks (n = 118, 64.8%) reported higher rates of high blood pressure compared to Whites (n = 118, 42.9%). Based on the diagnostic criteria 13.6% (n = 62) were undiagnosed with high blood pressure. Blacks (49.7%) were more likely to report a true positive diagnosis and Whites (50.2%) were more likely to report a true negative diagnosis of high blood pressure. Sensitivity was 72% and specificity 80%. Sensitivity was significantly higher for Blacks (80%) than for Whites (62%)Agreement between self-report and diagnostic criteria for high blood pressure was substantial (kappa 0.68) across all participants. Conclusions: Our findings add to the evidence that self-report is usually a valid method for assessing high blood pressure, at least for studies with large sample sizes. The greater sensitivity rate for Blacks than Whites suggests that self-report of high blood pressure is more accurate for Blac
Authors and Affiliations
Dede Kossiwa Teteh
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