Participants
Sandya Lakkur
Applications of Multivariate Mann-Whitney U-Statistics to Describe Differences in Cognitive Profile in People with Schizophrenia vs. Controls
A battery of neuropsychological tests was administered to two subgroups of schizophrenia patients - deficit and nondeficit patients - and healthy controls. Multivariate Mann-Whitney U-statistics were used to estimate how well the neuropsychological tests classified individuals into the three groups. The results indicated that the deficit group showed little overlap in test scores with control subjects and moderate overlap with the nondeficit group, which showed intermediate levels of impairments compared to the controls on most tests. Further analysis of the data will determine the variations among the neuropsychological domains tested in the level of impairment between deficit and nondeficit patients.