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The Turlock vitamin–mineral supplementation trial: a statistical reanalysis

Published online by Cambridge University Press:  31 July 2008

Eric Peritz
Affiliation:
School of Public Health and Community Medicine, The Hebrew University and Hadassah Medical Organization, Jerusalem, Israel

Summary

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.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1994

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References

Benton, D. & Buts, J. P. (1990) Vitamin–mineral supplementation and intelligence. Lancet, 335, 1158.Google Scholar
Benton, D. & Roberts, G. (1988) Effect of vitamin and mineral supplementation on intelligence of a sample of schoolchildren. Lancet, 1, 140.Google Scholar
Crombie, J. K., Todman, J., McNeill, G., Florey, G.Du, V., Mengies, I. & Kennedy, R. A. (1990) Effect of vitamin and mineral supplementation on verbal and non-verbal reasoning of schoolchildren. Lancet, 335, 744.Google Scholar
Naismith, D. J., Nelson, M., Burley, V. J. & Gatenby, S. J. (1988) Can children's intelligence be increased by vitamin and mineral supplementation?. Lancet, 2, 335.Google Scholar
Schoenthaler, S.J., Amos, S.P., Eysenck, H. J., Peritz, E. & Yudkin, J. (1991) Controlled trial of vitamin–mineral supplementation: effects on intelligence. Person. Indiv. Diff. 12, 351.Google Scholar
Tukey, J. W. (1949) Comparing individual means in the analysis of variance. Biometrics, 5, 99.Google Scholar