Blood Pressure Determinations During Medical Examinations: How Many?

In the course of an epidemiological study carried out in Montreal, the systolic and diastolic blood pressures were taken 4 times, under rigorously standardized conditions, at 10-minute intervals, in 804 male employees, aged 20-70, randomly selected from 10,162 civic employees. Using a linear multipl...

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Bibliographic Details
Published in:Canadian journal of public health 1974-11, Vol.65 (6), p.447-450
Main Authors: MATHIEU, G., BIRON, P., ROBERGE, F., PICARD, J.-M., GOULET, C., ALLARD, C.
Format: Article
Language:English
Subjects:
Adult
Aged
Blood pressure
Blood Pressure Determination
Coefficients
Confidence interval
Diastolic pressure
Epidemiologic studies
Humans
Male
Middle Aged
Patient assessment
Physical Examination
Pressure
Probability
Reading tables
Regression Analysis
Standard error
Systolic pressure
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Summary:In the course of an epidemiological study carried out in Montreal, the systolic and diastolic blood pressures were taken 4 times, under rigorously standardized conditions, at 10-minute intervals, in 804 male employees, aged 20-70, randomly selected from 10,162 civic employees. Using a linear multiple regression equation, the 1st and 2nd readings were used to predict the 4th reading. For that group of 804 subjects, the 95% confidence intervals were ± 4.9 mm Hg for the diastolic pressure and ± 9.4 mm Hg for the systolic. It is concluded that the "physician's office basal blood pressure" may be predicted with sufficient precision, by means of only 2 readings taken ten minutes apart, to be useful in epidemiological or pharmacological studies. Au cours d'une enquête épidémiologique menée à Montréal, la tension systolique et diastolique fut prise 4 fois, dans des conditions rigoureusement contrôlées, à 10 minutes d'intervalle, chez 804 employés masculins, âgés de 20 à 70 ans, choisis au hasard parmi 10,162 employés civiques. A l'aide d'une équation de régression multiple linéaire, la première et la deuxième lecture furent utilisées pour prédire la 4e lecture. Pour ce groupe de 804 sujets, les intervalles de confiance à 95% furent de ± 4.9 mm Hg pour la diastolique et de ± 9.4 mm Hg pour la systolique. La conclusion est que la "tension basale lors d'un examen médical" peut être prédite avec suffisamment de précision, au moyen de seulement 2 lectures prises à 10 minutes d'intervalle, pour être utile au cours d'études épidémiologiques et pharmacologiques.
ISSN:0008-4263
1920-7476