The Turlock vitamin-mineral supplementation trial: a statistical reanalysis.
A new analysis of a randomised double-blind trial confirms the fact that vitamin-mineral supplementation has a statistically significant effect on non-verbal IQ as measured by the WISC-R test. Further studies may show if this effect is large enough to be of practical importance.
Peritz
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School of Public Health and Community Medicine, Hebrew University and Hadassah Medical Organization, Jerusalem, Israel.
D000293:Adolescent; D000704:Analysis of Variance; D002140:California; D003627:Data Interpretation, Statistical; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007361:Intelligence Tests; D008297:Male; D008903:Minerals / Q000008:administration & dosage*; D016032:Randomized Controlled Trials as Topic / Q000379:methods; D014815:Vitamins / Q000008:administration & dosage*
D008903:Minerals; D014815:Vitamins