Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-23T22:00:41.223Z Has data issue: false hasContentIssue false

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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