1.Age-Specific Cutoff Scores on a T1-Weighted Axial Medial Temporal-Lobe Atrophy Visual Rating Scale in Alzheimer's Disease Using Clinical Research Center for Dementia of South Korea Data.
Gyeong Seon CHOI ; Geon Ha KIM ; Ji Hyun CHOI ; Jihye HWANG ; Eunjin KWON ; Seung Ah LEE ; Kyoung Ae KONG ; Hee Jin KANG ; Bora YOON ; Byeong C. KIM ; Dong Wno YANG ; Duk L. NA ; Eun Joo KIM ; Hae Ri NA ; Hyun Jeong HAN ; Jae Hong LEE ; Jong Hun KIM ; Kang Youn LEE ; Kee Hyung PARK ; Kyung Won PARK ; SangYun KIM ; Seol Heui HAN ; Seong Yoon KIM ; Soo Jin YOON ; So Young MOON ; Young Chul YOUN ; Seong Hye CHOI ; Jee Hyang JEONG
Journal of Clinical Neurology 2018;14(3):275-282
BACKGROUND AND PURPOSE: Visual assessment of medial temporal-lobe atrophy (MTA) has been quick, reliable, and easy to apply in routine clinical practice. However, one of the limitations in visual assessments of MTA is the lack of widely accepted age-adjusted norms and cutoff scores for MTA for a diagnosis of Alzheimer's disease (AD). This study aimed to determine the optimal cutoff score on a T1-weighted axial MTA Visual Rating Scale (VRS) for differentiating patients with AD from cognitively normal elderly people. METHODS: The 3,430 recruited subjects comprising 1,427 with no cognitive impairment (NC) and 2003 AD patients were divided into age ranges of 50–59, 60–69, 70–79, and 80–89 years. Of these, 446 participants (218 in the NC group and 228 in the AD group) were chosen by random sampling for inclusion in this study. Each decade age group included 57 individuals, with the exception of 47 subjects being included in the 80- to 89-year NC group. The scores on the T1-weighted axial MTA VRS were graded by two neurologists. The cutoff values were evaluated from the area under the receiver operating characteristic curve. RESULTS: The optimal axial MTA VRS cutoff score from discriminating AD from NC increased with age: it was ≥as ≥1, ≥2, and ≥3 in subjects aged 50–59, 60–69, 70–79, and 80–89 years, respectively (all p < 0.001). CONCLUSIONS: These results show that the optimal cutoff score on the axial MTA VRS for diagnosing of AD differed according to the decade age group. This information could be of practical usefulness in the clinical setting.
Aged
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Alzheimer Disease*
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Atrophy*
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Cognition Disorders
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Dementia*
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Diagnosis
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Humans
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Korea*
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Pemetrexed
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ROC Curve
Result Analysis
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