Terminal digit preference, random error, and bias in routine clinical measurement of blood pressure.
We examined the presence, magnitude, and consequences of systematic and random errors caused by terminal digit preference in the measurement of highest systolic blood pressure during prenatal visits in 28,841 non-referred pregnant women who delivered between 1 January 1982 and 31 March 1990.
In the overall distribution of terminal digit readings, 78% were read to 0, 15% to even digits other than 0, 5% to 5, and only 2% to odd digits other than 5. This preference for 0's was consistent across the entire distribution of blood pressure and for a variety of maternal characteristics.
The relative frequency of the cutoff value of 140 mmH g (i.e. the percentage of readings on 140 mmHg) within the range containing the value (i.e. 138-142 mmHg) was similar to the relative frequency of other multiples of 0.
Mots-clés Pascal : Hypertension artérielle, Epidémiologie, Pression sanguine, Méthodologie, Biais méthodologique, Erreur mesure, Homme, Appareil circulatoire pathologie
Mots-clés Pascal anglais : Hypertension, Epidemiology, Blood pressure, Methodology, Methodological bias, Measurement error, Human, Cardiovascular disease
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0021286
Code Inist : 002B30A01A1. Création : 199406.