Computerized adaptive testing of population psychological distress: simulation-based evaluation of GHQ-30.

Jan StochlJan R BöhnkeKate E PickettTim J Croudace

Published in: Social psychiatry and psychiatric epidemiology (2015)

The rationale for CAT-GHQ-30 is only supported when the required marginal reliability is lower than 0.9, which is most likely to be the case in cross-sectional and longitudinal studies assessing mean changes in populations. Precise measurement of psychological distress at the individual level can be achieved, but requires the deployment of all 30 items.

Keyphrases

cross sectional
sleep quality
clinical trial
clinical decision support
case control
genetic diversity