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Table 2 Simple and multivariate linear regression analyses of thyroid volume* on determinants

From: Thyroid volume, goiter prevalence, and selenium levels in an iodine-sufficient area: a cross-sectional study

  β 95% CI P
Simple linear regression    
Age (yr) 0.065 0.000-0.003 .023
BMI (kg/m2) 0.149 0.012-0.026 .001
TSH (mU/L) −0.136 −0.024-–0.010 .001
*Serum selenium (μg/L) 0.001 −0.059-0.061 .977
Smoking 0.112 0.055-0.164 .001
TPOAb positive 0.165 0.137-0.278 .001
TgAb positive 0.146 0.118-0.264 .001
Antibody positive 0.163 0.118-0.241 .001
Nodules 0.219 0.173-0.289 .001
Multivariate linear regression    
BMI (kg/m2) 0.126 0.009-0.023 .001
TSH (mU/L) −0.176 −0.029-–0.015 .001
Smoking 0.120 0.064-0.169 .001
TPOAb positive 0.139 0.098-0.253 .001
TgAb positive 0.106 0.059-0.218 .001
Nodules 0.218 0.174-0.285 .001
  1. *Logarithmic transformation was used to normalize the distribution.
  2. Antibody positive:POAb and/or TgAb positive.
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