Mediate_binaY_binaM_bootci
                        Using bootstrap to calculate the confidence
                        intervals in the scenario of binary outcome and
                        binary mediator.
Mediate_binaY_contM_bootci
                        Using bootstrap to calculate the confidence
                        intervals in the scenario of binary outcome and
                        continuous mediator.
Mediate_contY_binaM_bootci
                        Using bootstrap to calculate the confidence
                        intervals in the scenario of continuous outcome
                        and binary mediator.
Mediate_contY_contM_bootci
                        Using bootstrap to calculate the confidence
                        intervals in the scenario of continuous outcome
                        and continuous mediator.
mediate                 Mediation analysis based on the product method
mediate_binaY_binaM     Mediation analysis function for binary outcome
                        and binary mediator
mediate_binaY_contM     Mediation analysis function for binary outcome
                        and continuous mediator
mediate_contY_binaM     Mediation analysis function for continuous
                        outcome and binary mediator
mediate_contY_contM     Mediation analysis function for continuous
                        outcome and mediator
print.mediate           Print mediation results
