The data are from a convenience sample of 25 women and 10 men who were middle-aged or older. The purpose of the study was to understand the relationship between sedentary behavior and thickness of the medial temporal lobe (MTL) in the brain.
mtlA data frame with 35 observations on the following 23 variables.
ID for the individual.
Gender, which takes values F (female) or M (male).
Ethnicity, simplified to Caucasian and Other.
Years of educational.
APOE-4 status, taking a value of E4 or Non-E4.
Age, in years.
Score from the Mini-Mental State Examination, which is a global cognition evaluation.
Score on the Hamilton Rating Scale for anxiety.
Score on the Hamilton Rating Scale for depression.
We (the authors of this R package) are unsure as to the meaning of this variable.
We (the authors of this R package) are unsure as to the meaning of this variable.
We (the authors of this R package) are unsure as to the meaning of this variable.
Self-reported time sitting per day, averaged to the nearest hour.
Metabolic equivalent units score (activity level). A score of
0 means "no activity" while 3000 is considered "high activity".
Classification of METminwk into Low or High.
Thickness of the CA1 subregion of the MTL.
Thickness of the CA23DG subregion of the MTL.
Thickness of a subregion of the MTL.
Thickness of the fusiform gyrus subregion of the MTL.
Thickness of the perirhinal cortex subregion of the MTL.
Thickness of the entorhinal cortex subregion of the MTL.
Thickness of the subiculum subregion of the MTL.
Total MTL thickness.
A New York Times article references this study. https://www.nytimes.com/2018/04/19/opinion/standing-up-at-your-desk-could-make-you-smarter.html
library(ggplot2)
ggplot(mtl, aes(x = ipa_qgrp, y = met_minwk)) +
geom_boxplot()
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