Hanne Huygelier1,2, Brenda Schraepen3, Marijke Miatton4, Lies Welkenhuyzen3,5, Karla Michiels6, Eline Note6, Christophe Lafosse7, Hella Thielen3,8, Robin Lemmens8,9, Rose Bruffaerts10,11,12, Nele Demeyere13, Céline R Gillebert3,8,5. 1. Brain and Cognition, KU Leuven, Leuven, Belgium. hanne.huygelier@kuleuven.be. 2. Leuven Brain Institute, KU Leuven, Leuven, Belgium. hanne.huygelier@kuleuven.be. 3. Brain and Cognition, KU Leuven, Leuven, Belgium. 4. Department of Neurology, Cognitive Centre UGent, Ghent University Hospital, Ghent University, 4Brain, Ghent, Belgium. 5. TRACE Center for Translational Health Research, KU Leuven - Ziekenhuis Oost-Limburg, Genk, Belgium. 6. Department of Physical Medicine and Rehabilitation, University Hospital Leuven - Campus Pellenberg, Lubbeek, Belgium. 7. Scientific Unit Rehabilitation Hospital RevArte, Antwerp, Belgium. 8. Leuven Brain Institute, KU Leuven, Leuven, Belgium. 9. KU Leuven - University of Leuven, Department of Neurosciences, Experimental Neurology; VIB Center for Brain & Disease Research, Department of Neurology, University Hospitals Leuven, Leuven, Belgium. 10. Laboratory for Cognitive Neurology, Department of Neurosciences, KU Leuven, Leuven, Belgium. 11. Biomedical Research Institute, Hasselt University, Hasselt, Belgium. 12. Computational Neurology, Experimental Neurobiology Unit (ENU), Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium. 13. Department of Experimental Psychology, University of Oxford, Oxford, UK.
Abstract
BACKGROUND AND PURPOSE: The Oxford Cognitive Screen is a stroke-specific screen to evaluate attention, executive functions, memory, praxis, language, and numeric cognition. It was originally validated in England for acute stroke patients. In this study, we examined the psychometric properties of the Dutch OCS (OCS-NL). METHODS: A total of 193 (99 acute stroke unit, 94 rehabilitation unit) patients were included in our study. A subset of patients (n = 128) completed a retest with the parallel version of the OCS-NL. RESULTS: First, we did not find evidence for a difference in prevalence of impairment between patients in the acute stroke versus rehabilitation unit on all but one of the subtests. For praxis, we observed a 14% lower prevalence of impairment in the rehabilitation than the acute stroke unit. Second, the parallel-form reliability ranged from weak to excellent across subtests. Third, in stroke patients below age 60, the OCS-NL had a 92% sensitivity relative to the MoCA, while the MoCA had a 55% sensitivity relative to the OCS-NL. Last, although left-hemispheric stroke patients performed worse on almost all MoCA subdomains, they performed similarly to right-hemispheric stroke patients on non-language domains on the OCS-NL. CONCLUSIONS: Our results suggest that the OCS-NL is a reliable cognitive screen that can be used in acute stroke and rehabilitation units. The OCS-NL may be more sensitive to detect cognitive impairment in young stroke patients and less likely to underestimate cognitive abilities in left-hemispheric stroke patients than the MoCA.
BACKGROUND AND PURPOSE: The Oxford Cognitive Screen is a stroke-specific screen to evaluate attention, executive functions, memory, praxis, language, and numeric cognition. It was originally validated in England for acute stroke patients. In this study, we examined the psychometric properties of the Dutch OCS (OCS-NL). METHODS: A total of 193 (99 acute stroke unit, 94 rehabilitation unit) patients were included in our study. A subset of patients (n = 128) completed a retest with the parallel version of the OCS-NL. RESULTS: First, we did not find evidence for a difference in prevalence of impairment between patients in the acute stroke versus rehabilitation unit on all but one of the subtests. For praxis, we observed a 14% lower prevalence of impairment in the rehabilitation than the acute stroke unit. Second, the parallel-form reliability ranged from weak to excellent across subtests. Third, in stroke patients below age 60, the OCS-NL had a 92% sensitivity relative to the MoCA, while the MoCA had a 55% sensitivity relative to the OCS-NL. Last, although left-hemispheric stroke patients performed worse on almost all MoCA subdomains, they performed similarly to right-hemispheric stroke patients on non-language domains on the OCS-NL. CONCLUSIONS: Our results suggest that the OCS-NL is a reliable cognitive screen that can be used in acute stroke and rehabilitation units. The OCS-NL may be more sensitive to detect cognitive impairment in young stroke patients and less likely to underestimate cognitive abilities in left-hemispheric stroke patients than the MoCA.