Means and SDs for calculating z-scores
normative_summaries.RdMeans and SDs for calculating z-scores
Format
A list of lists of tibbles. The entry of the list (named nacc) was created from
https://files.alz.washington.edu/documentation/uds3-means.pdf. The second (named updated)
was created in an attempt to replicate the former, but with the latest available data. The
third (name ravlt_trials) contains numbers of somewhat unknown origin, but is still included
for completeness. Each of the two entries contain a list of tibbles. Each list entry
correspond to a variable that we can standardize to z-scores. Each list entry holds a tibble
organized as follows:
- age_group
the age group as follows: <60, 60-69, 70-79, 80-89, >89
- edu_group
the education group based on years of education as follows: <13 years, 13-15, 16, >16
- SEX
the sex group. "m" = "male", "f" = "female".
- n
Number of subjects for which the means and standard deviations are based on.
- m
mean for variable in group given by age group (and possible sex and education group)
- sd
standard deviation