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Table 5 The cut-off points of FLI at waist circumference and BMI stratifications in NHANES 2017–2018

From: Population-specific cut-off points of fatty liver index: a study based on the National Health and Nutrition Examination Survey data

Gender Cut-off points BMI < 18.5 18.5 ≤ BMI < 25.0 25.0 ≤ BMI < 30.0 BMI ≥ 30.0
Whole 45.60 5.1 20.77 44.73 86.00
Male 48.57 a 23.26 62.09 91.35
 WC < 102 35.60 b 23.26 45.60 68.03
 WC ≥ 102 85.04 a a 63.30 91.35
Female 41.93 4.68 14.33 36.67 81.83
 WC < 88 14.29 4.68 11.58 23.48 a
 WC ≥ 88 75.28 a 30.65 36.67 81.83
  1. aThe optimal cut-off point of FLI could not be obtained due to insufficient data
  2. bThe calculated AUROC < 0.5, which cannot meet the requirements of diagnostic test