Rate of conversion from mild cognitive impairment to dementia in a Thai hospital-based population: A retrospective cohort
Issued Date
2022-01-01
Resource Type
eISSN
23528737
Scopus ID
2-s2.0-85133905495
Journal Title
Alzheimer's and Dementia: Translational Research and Clinical Interventions
Volume
8
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Alzheimer's and Dementia: Translational Research and Clinical Interventions Vol.8 No.1 (2022)
Suggested Citation
Thaipisuttikul P. Rate of conversion from mild cognitive impairment to dementia in a Thai hospital-based population: A retrospective cohort. Alzheimer's and Dementia: Translational Research and Clinical Interventions Vol.8 No.1 (2022). doi:10.1002/trc2.12272 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/86337
Title
Rate of conversion from mild cognitive impairment to dementia in a Thai hospital-based population: A retrospective cohort
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
Introduction: Mild cognitive impairment (MCI) is the state between normal cognition and dementia. This study objective was to estimate an average 1-year rate of conversion from MCI to dementia and explore the associated factors of conversion in a hospital-based cohort. Methods: A retrospective cohort study of participants with MCI was conducted in a tertiary care hospital in Thailand. Two hundred fifty participants, 50 years of age or older, were enrolled. Results: An average 1-year conversion rate from MCI to dementia was 18.4%. MCI patients who converted to dementia were likely older (P <.001), predominantly female (P =.028), vitamin D deficient (P =.012), and associated with lower Mini–Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) scores during first assessments (P <.001, P <.001 respectively) and follow-up assessments (P <.045, P <.001 respectively). We conducted two models of multivariate analysis, using binary logistic regression. In the first model, adjusted for age, sex, education, vitamin D deficiency, and first assessment MMSE scores, we found that underlying vitamin D deficiency (odds ratio [OR] = 3.13, 95% confidence interval [CI] 1.04 to 9.44) and first assessment MMSE scores (OR = 0.83, 95% CI 0.73 to 0.93) were significantly associated with conversion to dementia. In the second model, adjusted for age, sex, education, vitamin D deficiency and first assessment MoCA scores, only first assessment MoCA scores (OR = 0.58, 95% CI 0.45 to 0.76) were significantly associated with conversion to dementia. Discussion: The 1-year conversion rate from MCI to dementia was 18.4%. MMSE and MoCA were useful tools to assess baseline cognitive status in MCI patients and predict dementia progression. The association between vitamin D deficiency and risk of conversion from MCI to dementia requires further investigations.