Center for Neurologic Study-Liability Scale (CNS-LS)
How to Use
The CNS-LS is a short 7-item, self-administered questionnaire, designed to be completed by the patient, that provides a quantitative measure of the perceived frequency of PBA episodes. The CNS-LS can help accurately diagnose PBA.
How to Score
Add the values for each of the 7 items to get the total score. A CNS-LS score of 13 or higher may suggest PBA.
Sensitivity & Specificity
Moore SR, Gresham LS, Bromberg MB, Kasarkis EJ, Smith RA. A self report measure of affective lability. J Neurol Neurosurg Psychiatry. 1997;63(1):89-93.