| attributable_fraction | Attributable fraction, with worked derivation |
| check_work | Check a hand calculation against a derivation |
| collapse_strata | Collapse strata into a single 2 x 2 table |
| confint.epibyhand_derivation | Extract the confidence interval from a derivation |
| derivation | Create a derivation object |
| derivation_step | Create one step of a derivation |
| epi2x2 | Build a 2 x 2 table |
| epi_strata | Build a set of stratified 2 x 2 tables |
| estimate | Extract the point estimate from a derivation |
| homogeneity | Breslow-Day test of homogeneity, with worked derivation |
| mh_odds_ratio | Mantel-Haenszel odds ratio with worked derivation |
| mh_risk_ratio | Mantel-Haenszel risk ratio with worked derivation |
| odds_ratio | Odds ratio with worked derivation |
| print.epi2x2 | Print a 2 x 2 table with margins |
| print.epibyhand_derivation | Print a worked derivation |
| print.epi_strata | Print stratified tables |
| risk_difference | Risk difference with worked derivation |
| risk_ratio | Risk ratio with worked derivation |
| steps_table | Return the steps of a derivation as a data frame |