| BACKWARD_EXPOSURE | Performs deviance-based backwards variable selection in logistic regression with an exposure. |
| FORWARD_EXPOSURE | Performs deviance-based forwards variable selection in logistic regression with an exposure |
| LIKE | Obtains likelihood Calculates likelihood from observed outcome data and given covariate data/parameters. |
| STEPWISE_EXPOSURE | Performs deviance-based stepwise variable selection in logistic regression with an exposure |