Skip to contents

Regression Coefficients for T-score Based Standardization

t_score_coefs.Rd

Regression coefficients used to obtain standardized scores using T-scores.

Usage

t_score_coefs

Format

A named list with one entry for each NACC variable for which T-scores have been implemented. Each entry contains the coefficients needed for the corresponding model. This is a subset of intercept, age, age^2, sex, education, intercept2, sd, intercept3, education^0.5, age^2_2.

References

The coefficients implemented here are published in the following two articles:

  • Stricker NH, Christianson TJ, Lundt ES, Alden EC, Machulda MM, Fields JA, Kremers WK, Jr CRJ, Knopman DS, Mielke MM, Petersen RC (2021). “Mayo Normative Studies: Regression-Based Normative Data for the Auditory Verbal Learning Test for Ages 30–91 Years and the Importance of Adjusting for Sex.” Journal of the International Neuropsychological Society, 27(3), 211–226. ISSN 1355-6177, 1469-7661, doi:10.1017/S1355617720000752 , 2024-11-19.

  • Karstens AJ, Christianson TJ, Lundt ES, Machulda MM, Mielke MM, Fields JA, Kremers WK, Graff-Radford J, Vemuri P, Jack Jr. CR, Knopman DS, Petersen RC, Stricker NH (2023). “Mayo Normative Studies: Regression-Based Normative Data for Ages 30–91 Years with a Focus on the Boston Naming Test, Trail Making Test and Category Fluency.” Journal of the International Neuropsychological Society : JINS, 30(4), 389. doi:10.1017/S1355617723000760 , http://www.ncbi.nlm.nih.gov/pubmed/38014536.