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Helper Functions to Test Proportion Differences

Source: R/prop_diff_test.R
h_prop_diff_test.Rd

Helper functions to implement various tests on the difference between two proportions.

Usage 

prop_chisq(tbl)

prop_cmh(ary)

prop_schouten(tbl)

prop_fisher(tbl)

Arguments

tbl

(matrix)
matrix with two groups in rows and the binary response (TRUE/FALSE) in columns.

ary

(array, 3 dimensions)
array with two groups in rows, the binary response (TRUE/FALSE) in columns, and the strata in the third dimension.

Value

A p-value.

Functions

  • prop_chisq(): performs Chi-Squared test. Internally calls stats::prop.test().

  • prop_cmh(): performs stratified Cochran-Mantel-Haenszel test. Internally calls stats::mantelhaen.test(). Note that strata with less than two observations are automatically discarded.

  • prop_schouten(): performs the Chi-Squared test with Schouten correction.

  • prop_fisher(): performs the Fisher's exact test. Internally calls stats::fisher.test().

See also

prop_diff_test() for implementation of these helper functions.

Schouten correction is based upon Schouten et al. (1980) .