
Surrogate measure

Formula


OGTTbased indices

Stumwoll

18.3−0.271·BMI−0.0052·

 
I_{120}−0.27·G_{90}


Matsuda

\(10,000\left (\sqrt {G_{0}\!\cdot \! I_{0}\!\cdot \! G_{mean}\cdot I_{mean}}\right)\)

Fasting indices

HOMAIR

(G_{0}·I_{0})/22.5


QUICKI

1/(logG_{0}+logI_{0})


FIRI

(G_{0}·I_{0})/25


Revised QUICKI

1/(logG_{0}+logI_{0}+logNEFA)


Ratio of fasting insulin to glucose

I_{0}/G_{0}


Ratio of fasting glucose to insulin

G_{0}/I_{0}

 BMI, body mass index; G_{0}, fasting gluc, glucose 90 min after administration of glucose; G_{
mean
}, mean glucose during OGTT; I_{0}, fasting insulin; I_{120}, insulin 120 min after administration of insulin; I_{
mean
}, mean insulin during OGTT; NEFA, nonesterified fatty acids