The SAS System was used to program an algorithm designed to construct pairwise multiple comparisons among proportions. The statistical method is attributable to Levy and is based on a procedure described by Spjøtvoll and Stoline, which is an extension of Tukey's T-method. This SAS program can accommodate applications involving unequal sample sizes for a set of k independent sample proportions.
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References
1.
Daniel, W. W. (1980). Multiple comparison procedures: A selected bibliography. Monticello, IL: Vance Bibliographies.
2.
Games, P. A. (1971). Multiple comparisons of means. American Educational Research Journal, 8, 531-565.
3.
Glass, G. V , & Hopkins, K. D. (1984). Statistical methods in education and psychology (2nd ed.). Englewood Cliffs, NJ: Prentice-Hall.
4.
Hochberg, Y , & Tamhane, A. C. (1987). Multiple comparison procedures. New York: Wiley.
5.
Levy, K. J. (1977). Pairwise comparisons involving unequal sample sizes associated with correlations, proportions, or variances. British Journal of Mathematical and Statistical Psychology, 30, 137-139.
6.
Silver, N. C. , & Burkey, R. T. (1991). A FORTRAN 77 program for testing the differences between independent correlations. Educational and Psychological Measurement, 51, 641-644.
7.
Spjøtvoll, E. , & Stoline, M. R. (1973). An extension of the T-method of multiple comparison to include the cases with unequal sample sizes. Journal of the American Statistical Association, 68, 975-978.
8.
Trevisan, M. S. , & Paulson, F. L. (1990). SIGVALID: Testing for differences in values of validity coefficients. Applied Psychological Measurement, 14, 106.
9.
Tukey, J. W. (1953). The problem of multiple comparisons. Unpublished manuscript, Princeton University.
10.
Williams, R. H. (1992). Multiple comparisons among k independent binomial samples. Educational and Psychological Measurement, 52, 103-105.
11.
Williams, R. H. , & Applegate, B. (1992). Tukey-like pairwise comparisons among variances. Behavior Research Methods, Instruments, and Computers, 24, 494-495.
12.
Zwick, R. (1993). Pairwise comparison procedures for one-way analysis of variance designs. In G. Keren & C. Lewis (Eds.), A handbook for data analysis in the behavioral sciences: Statistical issues (pp. 43-71). Hillsdale, NJ: Lawrence Erlbaum.