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Table 1 Diagnostic criteria for obesity and metabolic syndrome

From: Association between metabolically healthy overweight/obesity and gallstones in Chinese adults

Diagnose

Criterion

BMI*

Underweight

BMI < 18.50 kg/m2

Normal weight

BMI 18.50–23.99 kg/m2

Overweight

BMI 24.00–27.99 kg/m2

Obese

BMI ≥ 28.00 kg/m2

Obese class I

BMI 28.00–34.99 kg/m2

Obese class II

BMI 35.00–39.99 kg/m2

Obese class III

BMI ≥ 40.00 kg/m2

MetS#

Elevated blood pressure

SBP ≥ 130 mmHg or DBP ≥ 85 mmHg or prior diagnosis of hypertension

Elevated blood glucose

FBG ≥ 100 mg/dL (5.6 mmol /L) or previous diagnosis of diabetes

Low HDL-C

HDL-C < 40 mg/dL (1.03 mmol/L) in men or < 50 mg/dL (1.29 mmol/L) in women or with previous diagnosis of hyperlipidemia

High TG

TG ≥ 150 mg/dL (1.70 mmol /L) or the use of fibrate antihyperlipidemic drugs

Abdominal obesity

WC ≥ 85 cm in men or ≥ 80 cm in women

  1. *BMI = weight (kg)/height squared (m2)
  2. #MetS = meet at least three of the above five criteria