Psychomotor development
scores were measured in the offspring at ª72
months of age, but there was a loss to follow-up of
ª50% in both groups. The psychomotor development
scores were significantly higher in the iodine group
(mean psychomotor development score, 91 13 vs.
82 14 in the controls); the prevalences of psychomotor
scores 60 were 0.5% in the iodine group vs. 9.7%
in the controls.