Table 2.

β coefficients in a linear model of covariates predicting dose of l-T₄ in the euthyroid panel. The multivariable model was simultaneously fitted with the parameters listed, all of which were significant predictors of the l-T₄ dose in univariate models. All variance inflations factors were <1.2.

Variable	β coefficient (95% CI)
Gender male vs female	0.22 (0.11, 0.33), P<0.001
Disease aetiology
Autoimmune vs malignant disease	−0.33 (−0.47, −0.19), P<0.001
Benign goitre vs malignant disease	−0.34 (−0.48, −0.20), P<0.001
Age	−0.26 (−0.37, −0.15), P<0.001
BMI	0.33 (0.22, 0.44), P<0.001
Deiodinase activity	−0.27 (−0.39, −0.15), P<0.001