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Table 2 Cognitive assessment scores by thyroid condition among adolescents: The Third National Health and Nutrition Examination Survey, 1988–94

From: Subclinical thyroid disorders and cognitive performance among adolescents in the United States

   Arithmetic Reading Block Design Digit Span
  n Mean (SE) Difference (SE) Mean (SE) Difference (SE) Mean (SE) Difference (SE) Mean (SE) Difference (SE)
Subclinical hyperthyroidism 30 7.64 (1.33) -0.80 (1.33) 7.10 (1.30) -1.43 (1.29) 8.36 (1.20) -0.83 (1.18) 7.70 (1.15) -0.79 (1.16)
Euthyroid 1275 8.44 (0.16) 0.00 (Reference) 8.52 (0.14) 0.00 (Reference) 9.19 (0.14) 0.00 (Reference) 8.49 (0.12) 0.00 (Reference)
Subclinical hypothyroidism 22 10.32 (1.40) 1.89 (1.44) 11.39 (0.75) 2.86** (0.78) 11.62 (0.72) 2.43** (0.73) 9.80 (0.69) 1.31 (0.69)
  1. n, Sample size. SE, standard error. Difference, mean difference compared to the referent group. **, p < 0.01. Test for the mean difference was derived from the general linear model using SPSS Complex Sampling.