In a German sample, dementia cases increased by 0.23% with an increasing prevalence of hearing impairment by 1 SD ( Teipel et al., 2015), and an increased risk of cognitive decline was described in case of a bilateral hearing loss with a hazard ratio of 1.43 ( Fritze et al., 2016). By 2050 up to 900 million people will be living with hearing loss ( World Health Organization, 2018) and 152.8 million with dementia ( Nichols, 2022). Hearing loss and dementia are among the most common chronic diseases in older age and frequently co-occur ( World Health Organization, 2020, 2021 McDonough et al., 2021).
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However, screening test batteries cannot replace a comprehensive cognitive evaluation. The choice of a cut-off range might help to better reflect the difficulty in clinical reality in detecting MCI. In the MCI group, a cut-off range between 22 and 24 points is proposed to increase diagnostic accuracy to a sensitivity and specificity of 97.5 and 90%, respectively.Ĭonclusion: The German MoCA-H seems to be a sensitive screening test for MCI and dementia and should replace commonly used auditory-based cognitive screening tests in older adults. The optimum cut-off for the detection of dementia was ≤21 points with a sensitivity of 96.3% and a specificity of 90%. Results: A mean score of 25.49 (SD = 3.01) points in the German MoCA-H was achieved in cognitively healthy participants, 20.08 (SD = 2.29) in the MCI and 15.80 (SD = 3.85) in the dementia group. Performance cut-offs for normal cognition, MCI and dementia were estimated for the MoCA-H score and z-scores using the English MoCA-H cut-off, the balanced cut-off and the Youden’s Index. Materials and methods: A total of 346 participants aged 60–97 years (M = 77.18, SD = 9.56) were included 160 were cognitively healthy, 79 with MCI and 107 were living with dementia based on the GPCOG and a detailed medical questionnaire as well as a comprehensive examination by a neurologist in case of cognitive impairment. The aim of the present study was to assess the diagnostic accuracy of the German MoCA-H among those with normal cognition, mild cognitive impairment (MCI) and dementia and to determine an appropriate performance cut- off. As the MoCA is known to perform differently across languages, revalidation of the German MoCA-H was necessary. To address the need for a cognitive screening test suitable for people with hearing loss, a visual version of the Montreal-Cognitive-Assessment was developed and recently validated in English (MoCA-H), with good sensitivity and specificity for identifying cases of dementia. Most neurocognitive screening tests are auditory-based, and performance can be affected by hearing loss.
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4Centre for Hearing Research (CHEAR), School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, QLD, Australiaīackground: Hearing loss and dementia are highly prevalent in older age and often co-occur.3MoCA Clinic and Institute, Greenfield Park, QC, Canada.2Department of Geriatric Medicine, Marien Hospital Herne, Ruhr University Bochum, Herne, Germany.
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