Table 7 Firth logistic regression models for the prediction of insulin resistance (Matsuda index < 4) using HTW phenotype.

From: Waist-to-height ratio and metabolic phenotype compared to the Matsuda index for the prediction of insulin resistance

Variable

Regression coefficient

Standard error

p value

Model 3

Intercept

− 2.5594

0.2855

< .0001

Age (per year)

0.0119

0.00448

0.0078

Male sex

0.2359

0.1244

0.0579

HTW Phenotype

  

< .0001

0 (reference)

0

  

1

1.5302

0.3220

< .0001

2

1.8433

0.1886

< .0001

3

3.1022

0.2198

< .0001

Model 4

Intercept

− 7.5758

0.5822

< .0001

Age (per year)

0.00457

0.00483

0.3440

Male sex

− 0.4244

0.1527

0.0054

HTW Phenotype

  

< .0001

0 (reference)

0

  

1

0.6977

0.3712

0.0602

2

1.6286

0.1968

< .0001

3

2.0175

0.2786

< .0001

Fasting blood glucose (per mmol/l)

0.9846

0.1016

< .0001

TG/HDL-C (per mmol/l)

0.6806

0.1483

< .0001

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