Validation of Iranian Smell Identification Test for screening of mild cognitive impairment and Alzheimer's disease
| Autor: | Alireza Kargar, Mohsen Davoudkhani, Azadeh Zendehbad, Maryam Noroozian, Alia Shakiba |
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| Rok vydání: | 2020 |
| Předmět: |
Olfactory system
050103 clinical psychology medicine.medical_specialty 05 social sciences Memory clinic Neuropsychology Disease Iran Neuropsychological Tests medicine.disease Sensitivity and Specificity Smell Neuropsychology and Physiological Psychology Neuroimaging Alzheimer Disease Internal medicine Valid Biomarker Developmental and Educational Psychology medicine Dementia Humans 0501 psychology and cognitive sciences Cognitive Dysfunction Mild cognitive impairment (MCI) Psychology |
| Zdroj: | Applied neuropsychology. Adult. 29(1) |
| ISSN: | 2327-9109 |
| Popis: | Background: According to the World Alzheimer Report 2019, an estimated 50 million people worldwide are living with dementia. The smell test is a method for early detection of Alzheimer's disease (AD) as an inexpensive, simple, and noninvasive screening tool. This study aimed to evaluate the accuracy of the Iran Smell Identification Test (Iran-SIT) in discriminating patients with AD, with mild cognitive impairment (MCI), and the healthy subjects.Methods: In this study, 42 patients with AD, 33 with MCI, and 32 healthy controls were recruited from the referral Memory Clinic of Tehran University of Medical Sciences. The olfactory function was examined with six odors through Iran-SIT.Results: We found a significant difference among the olfactory function in subjects with normal cognitive status, that of those with MCI and those with AD (p < 0.001). The cutoff point for the diagnosis of AD was (sensitivity and specificity were, respectively, 85.7 and 90.8%), and (Sensitivity and specificity were, respectively, 93.9 and 100%) for MCI.Conclusion: These results suggest that Iran-SIT is a valid biomarker and practical screening tool, with simple, inexpensive, and readily available for use in combination with neuropsychological tools and neuroimaging for early detection of AD. |
| Databáze: | OpenAIRE |
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