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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