Variable Details

Available Studies

ROS, MAP, MARS, Clinical Core, LATC

Scaled? 

Scaled

Variable Type 

Longitudinal

Variable Name 

cogn_po

Categories

Cognition

Visuospatial ability/perceptual orientation
Visuospatial ability/perceptual orientation domain - Average of 2 tests

Visuospatial Ability Domain

We formed a composite measure of the cognitive domain visuospatial ability, aka perceptual orientation, 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 2 cognitive tests are used to compute this score:

test score z-score cognitive test
cts_lopair z_LOpair line orientation
cts_pmat z_PMat progressive matrices (16 items)

Item level variables are available upon request.

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


Publications