Variation in Systolic and Diastolic Pressure with Changes in Age and Weight

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Abstract
Blood pressure determinations were made for a sample of villagers residing near Calcutta, India. Right and left systolic and diastolic pressures were determined by the auscultatory method, using both 4th and 5th phase criteria for diastolic pressure; weight and height were measured; and age was recorded for 382 males and 625 females ranging in age from 15 to over 70 years. Analysis of the results indicated that all measures of blood pressure showed a significant mean increase with age (P<.01) and also with weight (P< .01). The effect of weight on blood pressure could not be attributed to changes in weight with increased age, as age and weight were not significantly correlated. Bivariate surfaces, illustrating the effect of both age and weight on systolic and diastolic pressure have been generated using values computed by multiple regression equations.