Changes and Enhancements to SAS/STAT Software in V7 and V8

FREQ Procedure

The FREQ procedure now includes a TEST statement that provides asymptotic tests for selected measures of association and measures of agreement. A new BINOMIAL option in the TABLES statement computes the binomial proportion for one-way tables. You can compute the confidence bounds of a one-way table and request the test that the proportion equals a specified value as well as produce exact confidence bounds for the binomial proportion and an exact p-value for the binomial proportion test. You can now request that Fleiss-Cohen scores be used to compute the weighted kappa coefficient with the AGREE(WT=FC) option. The SCOROUT option requests that the row and column scores used for computing statistics such as Cochran-Mantel-Haenzsel statistics and Peason correlation be displayed.

The PCHI option in the EXACT statement computes the exact chi-square goodness-of-fit test for one-way tables as well as the exact Pearson chi-square test for two-way tables. The MAXTIME= option in the EXACT statement specifies the maximum time that PROC FREQ uses to compute an exact p-value.

The EXACT statement also includes the MC option for computing Monte Carlo estimates of exact p-values.

The Robins, Breslow, and Greenland (1986) estimate of variance is now used to compute the confidence bounds for the odds ratio and relative risk.

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