woolf_test function

Woolf Test

Test for homogeneity on $2 x 2 x k$ tables over strata (i.e., whether the log odds ratios are the same in all strata).

woolf_test(x)

Arguments

• x: A $2 x 2 x k$ table.

Returns

A list of class "htest" containing the following components: - statistic: the chi-squared test statistic.

• parameter: degrees of freedom of the approximate chi-squared distribution of the test statistic.

• p.value: $p$-value for the test.

• method: a character string indicating the type of test performed.

• data.name: a character string giving the name(s) of the data.

• observed: the observed counts.

• expected: the expected counts under the null hypothesis.

See Also

mantelhaen.test

References

Woolf, B. 1955. On estimating the relation between blood group and disease. Ann. Human Genet. (London) 19 , 251-253.

Examples

data("CoalMiners")
woolf_test(CoalMiners)