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- W2019914145 abstract "Hemoglobin A1c (HbA1c) ≥ 6.5% (47.5 mmol/mol) has recently been included as a criterion for the diagnosis of diabetes mellitus. It is unclear whether this criterion is appropriate in Asians.To examine the relationship between HbA1c and diabetes-specific moderate retinopathy in Asian ethnic groups.Four independent population-based cross-sectional studies (2004-2011) in Singapore representing the three major Asian ethnic groups (n = 13 170 adults aged ≥ 25 y: Chinese, 5834; Malays, 3596; and Indians, 3740).Moderate retinopathy was assessed from digital retinal photographs and defined as a level >43 using the Early Treatment Diabetic Retinopathy Study (ETDRS) scale. Sensitivity, specificity, positive and negative predictive values, and the area under the receiver operating characteristic curve for detecting moderate retinopathy were compared across ethnic groups at different HbA1c cut-points.HbA1c levels were higher in Indians and Malays compared to Chinese (P < .001). The prevalence of moderate retinopathy below HbA1c <6.5% was <1% in all ethnic groups. At HbA1c ≥ 6.5%, the sensitivity for detecting moderate retinopathy was lower in Chinese subjects compared to Indians and Malays (75.8 vs 86.0 and 85.3%), but specificity (89.7 vs 71.9 and 76.3%) was higher; however, positive predictive value and negative predictive value were similar among Chinese, Indians, and Malays (10.5, 12.3, 12.4%; and 99.6, 99.1, 99.2%, respectively). The AUCs were similar across all three ethnic groups (0.861, 0.851, and 0.853).Our study supports the use of HbA1c for diagnosing diabetes in Asians. Despite some interethnic variation in the relationship of HbA1c and retinopathy, a cut-point of 6.5% performs reasonably well in the three major Asian ethnic groups." @default.
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- W2019914145 date "2015-02-01" @default.
- W2019914145 modified "2023-10-16" @default.
- W2019914145 title "Diagnosis of Diabetes Mellitus Using HbA1c in Asians: Relationship Between HbA1c and Retinopathy in a Multiethnic Asian Population" @default.
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- W2019914145 doi "https://doi.org/10.1210/jc.2014-2498" @default.
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