Why the study?
Does transforming cardiac periods into frequencies introduce errors in EKG data analysis?
Does transforming cardiac periods into frequencies introduce errors in EKG data analysis?
The widely used convention of transforming EKG period data into heart rate introduces statistical errors and should not be used without valid justification.
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May bias EKG-derived metrics; leaves open optimal interval analysis methods in psychophysiology research.
The purpose of this study was to compare two methods of analyzing EKG data, period (R–R intervals) and frequency (heart rate). Simulated data as well as EKGs recorded from newborn infants were utilized to show the effects of transforming cardiac periods into frequencies. The results showed that this transformation introduces errors, which are reflected in the mean, variance, and the degree of skewness of the basic data. It is argued that the widely used convention of transforming period data into heart rate should not be used without valid justification.
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Khachaturian et al. (1972) studied this question.
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