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Table 4 A comparison of the demographic, goiter and thyroid function data between the pregnant women in the initial study and those in the validation study.

From: Two logistic models for the prediction of hypothyroidism in pregnancy

PARAMETER (Unit) INITIAL STUDY VALUE:
N = 163
VALIDATION STUDY VALUE:
N = 197
P-Value
Age (Yrs) 29.9 ± 0.8 23.8 ± 1.3 < 0.001#*
Gestational Age (Wks) 28.4 ± 0.6 22.5 ± 0.9 < 0.0001#*
Gravidity 3.0(1-8) 1.9(1-5) < 0.001+*
Goiter Prevalence Rate (%) 50.3 9.1 < 0.0001$*
Body Weight (Kg) 75.2 ± 1.4 53.7 ± 1.7 < 0.0001#*
TSH (mU/L) 4.9(00-10.6) 4.0(1.8-6.9) < 0.001+*
FT4 (pmol/L) 13.8(5.4-26.1) 16.9(7.9-28.2) < 0.0001+*
  1. N = Number of subjects
  2. * = Statistically significant at p < 0.05
  3. # = Analysis by two-tailed, unpaired Student t-test
  4. + = Analysis by Mann-Whitney U test
  5. $ = Analysis by Chi-square test
  6. Yrs = Years
  7. Wks = Weeks