Table 2. Baseline Characteristics of Infants With Congenital Hypothyroidism (Quantitative Variables).

Characteristic	Mean (Range)
Age at diagnosis, day	28.3 (5 - 90)
Mother’s age at delivery, y	25.56 (17 - 42)
Birth weight, gram	3042 (950 - 5700)
Venous TSH level at diagnosis	32 (10 - 152)
TSH during the first year of treatment, mIU/L	4.8 (0.14 - 50.58)
TSH during the three years of treatment, mIUL	4.99 (0.18 - 41.96)
TSH 30 days after withdrawal of L-T4 therapy, mIU/Ll	8.03 (0.3 - 58.25)
TSH 90 days after withdrawal of L-T4 therapy, mIU/L	5.34 (1 - 21.8)