This function conducts a Pearson's chi-squared test for a twoxtwo constructed using the specified exposure and outcome. Internally the function uses chisq.test. The output of the function includes the chi-squared test statistic, degrees of freedom, and the p-value from the test.
chisq(.data, exposure, outcome, correct = TRUE, ...)Either a data frame with observation-level exposure and outcome data or a twoxtwo object
Name of exposure variable; ignored if input to .data is a twoxtwo object
Name of outcome variable; ignored if input to .data is a twoxtwo object
Logical as to whether or not to apply continuity correction; default is TRUE
Additional arguments passed to twoxtwo function; ignored if input to .data is a twoxtwo object
A tibble with the following columns:
test: Name of the test conducted
estimate: Point estimate from the test (NA for chisq())
ci_lower: The lower bound of the confidence interval for the estimate (NA for chisq())
ci_upper: The upper bound of the confidence interval for the estimate (NA for chisq())
statistic: Test statistic from the test
df: Degrees of freedom parameter for the test statistic
pvalue: P-value from the test
exposure: Name of the exposure variable followed by +/- levels (e.g. smoking::yes/no)
outcome: Name of the outcome variable followed by +/- levels (e.g. heart_disease::yes/no)