Lead poisoning is known to cause physical and mental developmental problems, and severe cases can lead to brain damage.
The negative slow wave correlated significantly with the 1-year Mental Developmental Index.
High amounts of daily hassles in early pregnancy were associated with lower mental developmental scores.
Results The Bayley mental developmental indexes were similar in both groups.
Case subjects had a mental developmental index <70, and controls had a mental developmental index ≥85, according to the Bayley Scales of Infant Development II at 18 months' corrected age.
Excess lead in drinking water can cause health problems, including physical and mental developmental delays in infants, health officials say.
The average family at the 28-apartment shelter has two to three young children, and many have at least one child with a mental, developmental or physical disability.
Infants with intracranial hemorrhage (23%) had significantly lower mental developmental index and psychomotor developmental index scores than infants with no intracranial hemorrhage, independent of antenatal phenobarbital exposure.
In the total cohort of 436 infants, the presence of intracranial hemorrhage or periventricular leukomalacia was associated with lower mental developmental index and psychomotor developmental index scores; the presence of increasing birth weight, maternal education, and a complete course of antenatal steroids was associated with a higher mental developmental index score.
Study Design: Infants were evaluated at 18 to 22 months corrected age with a standard neurologic examination and the Bayley scales of infant development measuring the mental developmental index and the psychomotor developmental index.
The mean Bayley Scales of Infant Development scores were as follows: Mental Developmental Index score, 95.6 (14.5); Psychomotor Developmental Index score, 97.9 (14.8); and Behavioural Rating Scale score, 110.6 (110.6.
