OBSERVER ERROR IN RECORDING ARTERIAL BLOOD PRESSURE

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Abstract
The observer error in the recording of blood pressure by two observers has been assessed with reference to 510 men and women aged 60 to 89 years. In this series, the average fall of the blood pressure criteria that occurs when the second observer records the blood pressure shortly after the first observer is very small, 3.0 mm for the systolic and 0.5 mm for the diastolic blood pressure. The observer error is significant (2.6 mm + 0.81) for the systolic but is not significant (0.8 mm + 0.45) for the diastolic blood pressure. In addition, the frequency distributions of the recordings of the two observers differ significantly for systolic and diastolic blood pressure.

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