[Results of blood pressure measurements depending on the place and method of measurement in individuals with normal blood pressure and borderline hypertension].

The analysis of systolic (SBP) and diastolic (DBP) blood pressure measurements in 2 positions (sitting, standing) X 2 subsequent measurements (order) X 2 places (right, left arm) was performed on the basis of the Pol-Monica I screening conducted in 1984 yr. There were 1309 examined men and 1327 women aged 35-64 yrs. The mean values of 2 measurements taken in the sitting position on the right arm were used for division of the total sample into 7 categories: 1. normotension, 2. borderline systolic hypertension, 3. borderline diastolic hypertension, 4. borderline systolic-diastolic hypertension, 5. systolic hypertension, 6. diastolic hypertension, 7. systolic-diastolic hypertension. For each sex X blood pressure category the 4-way mixed ANOVA was calculated: persons as random effect and position, order and place as fixed effects. The effects and variance components were estimated and tested. The effects of position, order and persons and interaction position X persons, places X persons and position X persons X places were significant for both sexes, all BP categories for SBP as well as DBP measurements.