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  • Title: Effect of long-term treatment of hyperactive children with methylphenidate.
    Author: Weiss G, Kruger E, Danielson U, Elman M.
    Journal: Can Med Assoc J; 1975 Jan 25; 112(2):159-65. PubMed ID: 803405.
    Abstract:
    Three groups of hyperactive children were compared by various measures of outcome 5 years after initial evaluation: 24 who were treated with methylphenidate for 3 to 5 years during the follow-up period, 22 treated with chlorpromazine for 18 months to 5 years, and 20 who had received no medication during the follow-up period. The three groups were matched with respect to age, IQ, socioeconomic class and sex. No statistically significant differences were found between the three groups on the following measures of outcome: emotional adjustment, delinquency, Wechsler Intelligence Scale for Children, Bender Gestalt visual-motor test and academic performance (as measured by number of grades failed). Initially there was a significant difference between the three groups on ratings of hyperactivity and family diagnosis. Hyperactivity scores decreased significantly over the 5 years; family diagnosis ratings changed little. Analysis of covariance for these two measures showed no difference in degree of improvement between the three groups. Our impression was that methylphenidate was helpful in making hyperactive children more manageable at home and at school, but did not significantly affect their outcome after 5 years of treatment.
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