Table 1 Calculation of IR indices

TyG [10]

ln (FBG [mg/dL] x triglyceride [mg/dL]/2)

TyG-BMI [14]

TyG x BMI

TyG-WC [14]

TyG x WC [cm]

METS-IR [11]

ln (2 × FBG [mg/dL] + triglyceride [mg/dL]) × BMI / ln (HDL-C[mg/dL])

VAI [13]

{WC [cm]/ (39.68 + (1.88 × BMI))) × triglycerides [mmol/L]/1.03 × (1.31/HDL-C [mmol/L]} in men, or {WC [cm]/ (36.58 + (1.89 × BMI))) × triglycerides [mmol/L]/0.81 × (1.51/ HDL-C [mmol]/L} in women

LAP [12]

(WC [cm] − 65) × triglycerides [mmol/L] in men,

or (WC [cm] − 58) × triglycerides [mmol/L] in women