Ataman, Susan L.; Cooper, Richard S.; Rotimi, Charles N.; McGee, Daniel L.; Osotimehin, Babatunde; Kadiri, Solomon; Kingue, Samuel; Muna, Walinjom; Fraser, Henry S.; Forrester, Terrence E.; Wilks, Rainford J.
Author Affiliation, Ana.
Tropical Metabolism Research Unit
Standardization of blood pressure measurement in a international comparative study
Journal of Clinical Epidemiology
Date of Publication
Evaluates procedures of standardization on the measurement of blood pressure. Examines 8981 individuals in eight sites in six countries with the standard mercury sphygmomanometer. Evaluates and describes the effectiveness of central training, site visits, monitoring of digit preference, and the use of an electronic device for internal standardization. In all but one of the sites reliability was high and comparable to the observers at the Coordinating Center. Digit preference for the entire set of measurements was limited (frequency of terminal zero = 23.5 percent for systolic and 28.9 percent for diastolic readings) and could be shown to have virtually no effect on prevalence rates on correlation estimates. Mean differences among observers within a given site and between sites were small (ñ-5 mmHg). While logistically complex, these methods can provide the basis for standardization in international comparative blood pressure surveys.....