The association between thyroid function and insulin resistance as measured by the metabolic score for insulin resistance (METS-IR): insights from NHANES 2007–2012

Table 2 Association between thyroid status and METS-IR

Model	Variable	Total (n = 6507)				Male (n = 3102)				Female (n = 3405)
Model	Variable	Beta	95% CI		P value	Beta	95% CI		P value	Beta	95% CI		P value
1	TSH	0.024	0.015	0.036	< 0.001	0.029	0.025	0.033	< 0.001	0.018	0.013	0.024	< 0.001
2	TSH	0.003	0.001	0.004	0.021	0.008	0.001	0.014	< 0.001	-0.002	-0.007	0.001	0.310
3	TSH	0.009	0.007	0.010	0.006	0.015	0.011	0.018	< 0.001	0.001	0.000	0.002	0.072
1	Free T4	-0.043	-0.052	-0.033	< 0.001	-0.071	-0.095	-0.054	< 0.001	-0.031	-0.077	0.002	0.064
2	Free T4	-0.001	-0.010	0.002	0.201	-0.014	-0.018	0.001	0.184	-0.001	-0.009	0.007	0.933
3	Free T4	-0.012	-0.019	-0.006	0.089	-0.029	-0.036	-0.017	0.103	-0.009	-0.013	-0.007	0.217

Model 1 was unadjusted. Model 2 was adjusted for age, sex, race/ethnicity, and the presence of hypertension, hyperlipidemia, and diabetes mellitus. Model 3 was adjusted for age, sex, and race/ethnicity. P-values < 0.05 were considered as statistically significant. CI confidence interval

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