Available Studies
ROS, MAP, MARS, Clinical Core, LATC
Categories
Cognition
We formed a composite measure of the cognitive domain perceptual speed 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 4 cognitive tests are used to compute this score:
Test score | Z-score | Cognitive test name |
---|---|---|
cts_sdmt | z_SDMT | Symbol digits modality test (oral) |
cts_nccrtd | z_NCcrtd | Number comparison |
cts_stroop_cname | z_cname | Stroop color naming |
cts_stroop_wread | z_wread | Stroop word reading |
Item level variables are available upon request.
Note: The variable is calculated if more than half the z-scores are non-missing.