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"Later, lazier, and unluckier”: a heuristic profile of high vulnerability is an independent predictor of uncontrolled blood pressure (the PREVIEW study)

Authors Abraham I, Lee C, Song M, Vancayzeele S, Brié H, Hermans C, Van der Niepen P, MacDonald K

Published 22 June 2010 Volume 2010:3 Pages 163—166


Review by Single-blind

Peer reviewer comments 3

Ivo Abraham1,2, Christopher Lee1,2, MinKyoung Song1,3, Stefaan Vancayzeele4, Heidi Brié4, Christine Hermans4, Patricia Van der Niepen5, Karen MacDonald2

1University of Arizona, Tucson, AZ, USA; 2Matrix45, Earlysville, VA, USA; 3School of Nursing, University of Pennsylvania, Philadelphia, PA, USA; 4Department of Nephrology and Hypertension, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium; 5Novartis Pharma, Vilvoorde, Belgium

Objective: Vulnerability profiling, an alternative to deterministic risk assessment, offers clinicians a more intuitive but empirically-grounded assessment of patient risk. This study aimed to determine whether a heuristic profile of high vulnerability is an independent predictor of uncontrolled hypertension.

Methods: Secondary analysis of prospective observational study data on 2999 hypertensive patients treated with valsartan. Predictive validity of vulnerability profiling for first-line, secondline, and first-or-second-line antihypertensive treatment was inferred from 1) logistic regression models with adequate statistical fit, 2) statistically significant odds ratios for uncontrolled BP for the high-vulnerability cluster exceeding 1.00, and 3) correct classification rates for patients’ BP control status.

Results: All models of uncontrolled BP were significant (P < 0.001); all odds ratios for the high-vulnerability cluster were greater than 1.00 and significant (P < 0.001). Correct classification rates for the highly-vulnerability cluster on uncontrolled BP after first-line, second-line, or either treatment were 91.1%, 61.2%, and 93.5% for systolic BP; 74.5%, 65.8%, and 76.7% for diastolic BP; and 92.8%, 65.3%, and 94.6% for combined systolic and diastolic BP.

Conclusion: The heuristic profile of “later, lazier, and unluckier” is an intuitive and valid tool to help identify patients at greater risk for poor BP control seen in general practice.
Keywords: hypertension, heuristics, vulnerability, profiling, risk

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