Normality testing

EH Elise Hickman
AP Alexis Payton
PD Parker Duffney
HW Heather Wells
AC Agathe S. Ceppe
SB Stephanie Brocke
AB Aleah Bailey
MR Meghan E. Rebuli
CR Carole Robinette
BR Brian Ring
JR Julia E. Rager
NA Neil E. Alexis
IJ Ilona Jaspers
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For all continuous variables, normality was tested before between-group comparative analyses using the Shapiro-Wilk test. Normally distributed data were analyzed using parametric tests, and nonnormally distributed data were analyzed using nonparametric tests when possible. Normality was also assessed through the examination of histograms and quantile–quantile plots through the ggplot2 package (24).

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