1. Location-based differences in cognition and functional capacity: Consistent levels of impairment in participants with schizophrenia compared to healthy controls.
- Author
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Guzman A, Klein H, Keefe RS, Horan WP, and Harvey PD
- Subjects
- Humans, Male, Female, Adult, Middle Aged, Neuropsychological Tests, Cognitive Dysfunction physiopathology, Cognitive Dysfunction etiology, Schizophrenic Psychology, Virtual Reality, Cognition physiology, Young Adult, Schizophrenia physiopathology
- Abstract
Cognitive performance manifests regional differences, correlated with education. There is less information available about regional differences in performance-based measures of functional capacity. In multi-national trials focused on cognitive enhancement, it may be impossible to validate every measure in all locations. It is unknown if regional differences in healthy controls' (HC) performance affects relative levels of impairment in participants with schizophrenia (SCZ). A multi-site study comparing SCZ and HC administered the MATRICS Consensus Cognitive Battery (MCCB) and Virtual Reality Functional Capacity Assessment Tool (VRFCAT) to 164 HC participants and 164 with SCZ across three sites (Columbia, SC, Miami, and San Diego) and a representative sample of HC (n = 390) completed the VRFCAT in Durham, NC. Performance was compared between HC and SCZ participants at the validation sites. There were statistically significant cross-site differences in HC performance on both the MCCB and VRFCAT. Differences between HC and SCZ on MCCB and VRFCAT were substantial at all three sites, indicating that regional variations in HC performance did not induce reduced differences from SCZ participants. Regional differences were smaller than diagnostic group differences, suggesting that relative impairments of participants with SCZ is consistently preserved across performance differences in HC., Competing Interests: Declaration of competing interest Dr. Harvey has also received consulting fees or travel reimbursements from Alkermes, Boehringer Ingelheim, Karuna Therapeutics, Merck Pharma, Minerva Neurosciences, and Sunovion (DSP) Pharma in the past year. He receives royalties for BAC-app and BACS (Owned by WCG Endpoint Solutions, Inc. and contained in the MCCB), but not for the VRFCAT. He is chief Scientific Officer at i-Function, Inc. Dr. Keefe was CEO at Verasci, Inc. when these data were collected and now serves as a consultant to WCG, Karuna, Novartis, Kynexis, Gedeon-Richter, Pangea, Merck, and Boehringer-Ingelheim, and receives royalties for the BAC-app, BACS and VRFCAT. Dr. Horan was Vice President at Verasci when these data were collected and is now a Full Time Employee of Karuna Therapeutics (A Division of Bristol Myers, Squibb). Dr. Klein is a full-time employee at WCG Endpoint Solutions (Formerly known as Verasci, Inc). Ms. Guzman reports no biomedical conflicts of interest., (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Published
- 2024
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