Journal of hypertension
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Journal of hypertension · Dec 1992
Limited reproducibility of hourly blood pressure values obtained by ambulatory blood pressure monitoring: implications for studies on antihypertensive drugs.
To assess the reproducibility of average hourly blood pressure values obtained by 24-h non-invasive ambulatory monitoring. ⋯ Reproducibility is less for hourly than for 24-h average blood pressure. This feature (which probably depends on behavioural differences between two recordings) suggests that ambulatory blood pressure measurement partly loses its advantages for reproducibility and reduction in trial size if the results are analysed over hourly periods.