Package index • NpsychBatteryNorms

Standardizing Scores

Functions to standardize scores.

std_scores(): Standardize Raw Cognitive Scores to Z-Scores

std_scores_using_T(): Standardized Scores using T-scores

std_scores_using_norms(): Standardized Scores using Norms

std_scores_using_regression(): Standardize Raw Cognitive Scores using Regression Models

add_standardized_scores(): Add Standardized Scores to Data

Data and Code Objects

Data sets and code objects used for standardizing scores, to help translate variable names from/to Mayo Normative Studies to/from NACC, and other helper objects.

demo_data: Demo Data

normative_summaries: Means and SDs for calculating z-scores

rdd: Researchers Data Dictionary in List Form

reg_coefs: Regression Coefficients for Regression Based Standardization

ss: Scaled Scores lookup tables from Mayo Normative Studies

t_score_coefs: Regression Coefficients for T-score Based Standardization

default_methods: Default Standardization Methods

mns_to_nacc: Translate NACC variable names to Mayo Normative Study variable names

nacc_to_mns: Translate Mayo Normative Study variable names to NACC variable names

Helper Functions

Various functions to be used for intermediate steps, such as calculate summary scores (FAS, MOCA clock, REY AVLT Accuracy/Total), find the age group needed for standardizing, look up scaled scores for T-score calculations, remove invalid scores using the Researchers Data Dictionary (RDD) published by NACC, replace raw score values with labels using the RDD published by NACC.

add_derived_scores(): Add Scores Calculated from Raw NACC Scores

calculate_fas(): Calcaulate Functional Assessment Score summary

calculate_mocaclock(): Calculate MoCA clock drawing test total

calculate_reyarec(): Calculate the Rey AVLT Accuracy

calculate_reytotal(): Calculate Rey AVLT Total score

get_age_group(): Get Age Group for Standardized Scores

get_ss_score(): Get Scaled Scores for use in T-score cacluations

valid_values_only(): Replace values with labels

values_to_labels(): Replace codes with labels

std_methods(): Explore Implemented Methods and Combination with Variables

methods_from_std_data(): Helper to extract methods from standardized columns