A procedure developed by Feldt and Mahmoud for estimating sample size was applied to clinical trials of dental caries preventives. The procedure was modified to account for features common to most clinical trials of cariostatic agents.
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References
1.
Feldt, L.S., and Mahmoud, M.W.: Power Function Charts for Specification of Sample Size in Analysis of Variance , Psychometrica, 23:201-210, 1958.
2.
Chilton, N.W. , and Fertig, J.W.: The Estimation of Sample Size in ExperimentsI. Using Comparison of Averages, J Dent Res32:530-540, 1953.
3.
Chilton, N.W. , and Fertig, J.W.: The Estimation of Sample Size in Experiments: II. Using Comparisons of Proportions, J Dent Res32:606-612, 1953.
4.
Marthaler, T.M. : Estimation of Sample Size for Longitudinal Clinical Caries Trials, Helv Odontol Acta11:168-174, 1967.
5.
Snedecor, G.W. , and Cochran, W.G.: Statistical Methods, 6th ed, Ames, Iowa: Iowa State University Press, 1967, p 115.
6.
Dunnett, C.W. : A Multiple Comparison Procedure for Comparing Several Treatments with a Control, J Am Stat Assoc50: 1096-1121, 1955.
