Table 7.

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

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