Maternal Thyroid Function during the Second Half of Pregnancy and Child Neurodevelopment at 6, 12, 24, and 60 Months of Age

Table 2

Mean scores on neurodevelopmental scales at 6, 12, and 24 months of age.

	6 Months		12 Months		24 Months
	N	Mean (SD)	N	Mean (SD)	N	Mean (SD)
Bayley
Mental development index	271	95.0 (7.9)	258	101.3 (9.1)	240	86.4 (11.7)
Psychomotor development index	271	96.2 (11.1)	257	107.0 (12.8)	240	98.2 (10.4)
Preschool language scale
Auditory comprehension	270	104.6 (12.9)	257	99.1 (12.9)
Expressive comprehension	270	91.1 (13.5)	257	94.5 (13.8)
Total score	270	97.7 (11.3)	257	96.6 (13.5)