Statistics
Exploratory data analysis was performed for all parameters. Unpaired
measurement comparisons were made using the unpaired t-test. Repeated
measurement comparisons of QRSd, and Mxc during different RV captures
were made using a linear mixed effect model (LMEM) with the Tukey
multiple comparison test. The results of these models are presented as
means with 95% confidence intervals and comparisons as mean differences
with 95% confidence intervals and p-values. A p-value < 0.05
was considered statistically significant. RStudio version 1.2.1335 with
R version 3.6.1 was used to perform statistical analyses. LMEM was done
using lme4 version 1.1-21. If not specified, all values are shown as
means (95%, CI). All analyses are available as a PDF R markdown
document in appendices.