Variable Details

Available Studies

ROS, MAP, MARS, Clinical Core, LATC

Scaled? 

Scaled

Variable Type 

Longitudinal

Variable Name 

cogn_wo

Categories

Cognition

Working memory
Working memory domain - Average of 3 tests

Working Memory Domain

We formed a composite measure of of the cognitive domain working memory by converting raw scores on each cognitive test to z scores, using the mean and standard deviation of the cohort, and then averaging the z scores to yield the composite.

The following 3 cognitive tests are used to compute this score:

test score z-score cognitive test
cts_df z_DF digits forward
cts_db z_DB digits backward
cts_doperf z_DOperf digit ordering

Item level variables are available upon request.

Note: The variable is calculated if more than half the z-scores are non-missing.


Publications