Estimates of the Gain in Power Utilizing Transformations of DMFS Scores-Reference-Cited by-同舟云学术

Estimates of the Gain in Power Utilizing Transformations of DMFS Scores

Published:1983-09 Issue:9 Volume:62 Page:992-996
ISSN:0022-0345
Container-title:Journal of Dental Research
language:en
Short-container-title:J Dent Res

Author:

Smith M.R.¹,Rule J.T.²

Affiliation:

1. Department of Mathematical and Computer Sciences, Michigan Technological University, Houghton, Michigan 49931

2. Department of Pediatric Dentistry, Dental School, University of Maryland, 666 West Baltimore Street, Baltimore, Maryland 21201

Abstract

More than 100,000 clinical caries trials were simulated utilizing the negative binomial distribution on a UNIVAC 1100 computer. In each trial, the raw data and logarithmic transformed data were analyzed using a standard t test analysis. The results were summarized as estimates of the power functions for each case. In almost all cases, the transformed data gave greater power than did the untransformed data. In several common situations, the differences were dramatic.

Publisher

SAGE Publications

Subject

General Dentistry

Link

http://journals.sagepub.com/doi/pdf/10.1177/00220345830620091601

Reference8 articles.

1. Glass, R.L. and Fleisch, S.: Decreases in Caries Prevalence. In: Foods, Nutrition and Dental Health, Vol. 3, Hefferren, J., Ayer, W. and Koehler, H., Eds. Park Forest, IL. Pathotox, 1981, pp. 180-188.

2. The appropriateness of analysis of variance to the statistical analyses of dental clinical trials

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