Efficiency of Clinical Trials: Selective Inclusion of Study Subjects

O'Mullane D.M. : Efficiency in Clinical Trials of Caries Preventive Agents and Methods, Commun Dent Oral Epidem 4: 190–194, 1976.

Downer M.C. , Holloway P.J. , and Davies T.G.H. : Clinical Testing of a Topical Fluoride Caries Preventive Programme., Brit Dent J 141: 242–247, 1976.

Jackson D. , and Sutcliffe P. : Clinical Testing of a Stannous Fluoride—Calcium Pyrophosphate Dentifrice in Yorkshire School Children., Brit Dent J 123: 40–48, 1967.

James P.M.C. , and Anderson R.J. : Clinical Testing of a Stannous Fluoride—Calcium Pyrophosphate Dentifrice in Bucknighamshire School Children., Brit Dent J 123: 33–39, 1967.

Naylor M.N. , and Emslie R.D. : Clinical Testing of Stannous Fluoride and Sodium Monofluorophosphate Dentifrices in London School Children., Brit Dent J 123: 17–23, 1967.

Adler P. : Correlation Between Dental Caries Prevalence at Different Ages, Caries Res 2: 79–86, 1968.

Cellier K.M. , Fanning E.A. , Gotjamanos T. , and Vowles N.J. : Some Statistical Aspects of a Clinical Study on Dental Caries in Children., Arch Oral Biol 13: 483–508, 1968.

Grainger R.M. : Analysis of Caries Increments by Age and Tooth Surface in Fluoridated and Non fluoridated Populations, by Electronic Computer, in James P.M.C. , Konig J.G. and Held H.R. , Eds.: Advances in Fluorine Research and Dental Caries Prevention, Vol 4, Oxford: Pergamon Press, 1966, p. 53.

Marthaler T.M. : On the Use of Discriminatory Analysis for Constructing Strata in Clinical Caries Increment Studies., Helv Odont Acta 12: 66–71, 1968.

Brudevold F. , and Chilton N.W. : Comparative Study of a Fluoride Dentifrice Containing Soluble Phosphate and a Calcium-free Abrasive: Second Year Report, JADA 72: 889–894, 1966.

Lu K.H. , and Porter D.R. : Evaluation of Caries-inhibitory Effect of Dentifrice by General Linear Hypothesis, J Dent Res 43: 11–25, 1964.

Worthington H.V. : Some Statistical Aspects of Dental Caries Data, Thesis, University of Manchester, 1975.

Howat A.P. , Holloway P.J. , and Davies T.G.H. : Clinical Testing of an M.F.P. Gel Dentifrice, Abstract No. 96, I.A.D.R. (British Division) 1977.

Blinkhorn A.S. , Holloway P.J. , and Davies T.G.H. : The Combined Effect of a Fluoride Mouthrinse and Dentifrice in the Control of Dental Caries. Abstract No. 92, I.A.D.R. (British Division) 1977.

Rugg-Gunn A.J. , Holloway P.J. , and Davies T.G.H. : Caries Prevention by Daily Fluoride Mouthrinsing., Brit Dent J 135: 353–360, 1973.

Backer-Dirks O. , Van Amerongen J. , and Winkler K.C. : A Reproducible Method for Caries Evaluation., J Dent Res 30: 346–359, 1951.

Snedecor G.W. , and Cochran W.G. : Statistical Methods, 6th Edition, Ames: Iowa State University Press, 1967, p. 111.

Welander E. : The Occurrence of Dental Caries in the Permanent Dentition, Uppsala: Almqvist and Wiksells, 1955.