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Previous Volume 355:850-851 August 24, 2006 Number 8 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: Variability of blood pressure is increasingly being recognized as having a predictive value in clinical outcomes independently of the 24-hour average measurement, as in the review article by Pickering and colleagues (June 1 issue).¹ Whereas dipping patterns have been considered as a measure of blood-pressure variability, a classification system based on the phase and amplitude of the human circadian rhythm, interpreted in the light of reference values for sex and age,² offers superior discrimination. In a six-year prospective study involving 297 patients with no history of morbid cardiovascular events who were undergoing 48-hour ambulatory blood-pressure monitoring,^3,4 a . . . [Full Text of this Article]

This article has been cited by other articles:

• Cornelissen, G., Halberg, F., Otsuka, K., Singh, R.B., Chen, C.-H. (2007). Chronobiology Predicts Actual and Proxy Outcomes when Dipping Fails. Hypertension 49: 237-239 [Full Text]