The authors respond: Heart rate variability analytic techniques

The analytic techniques suggested by the author of the correspondence are intriguing, and we agree that these would be valuable ways to examine HRV data, perhaps as the focus of a future study. Given this study's present sample size, however, this would be challenging. Linearity was maintained in our regression model, and residual errors were normally distributed and maintained equal variances. Given the limited sample size, however, linearity was not evaluated in a stepwise fashion across increasing severity scores.

Source: The American Journal of Emergency Medicine - February 20, 2020 Category: Emergency Medicine Authors: John E. Arbo Source Type: research