MediationResult

Mediation analysis results.

Usage

Source

MediationResult(
    total_effect,
    direct_effect,
    indirect_effect,
    proportion_mediated,
    total_se,
    direct_se,
    indirect_se,
    n_obs,
)

Returned by mediation_analysis(). Decomposes the total effect of a treatment on an outcome into a direct component (not passing through the mediator) and an indirect component (passing through the mediator), following the potential-outcomes framework of Imai, Keele, & Tingley (2010). Standard errors are obtained by a nonparametric bootstrap over the whole estimation procedure (refitting both the mediator and outcome GAMs on each resample).

Attributes

total_effect: float

Total effect of treatment on outcome, direct_effect + indirect_effect.

direct_effect: float

Direct effect of treatment on outcome, holding the mediator fixed at its value under treatment (natural direct effect).

indirect_effect: float

Indirect effect of treatment on outcome operating through the mediator (natural indirect effect).

proportion_mediated: float

Fraction of the total effect attributable to the mediator, indirect_effect / total_effect.

total_se: float

Bootstrap standard error of the total effect.

direct_se: float

Bootstrap standard error of the direct effect.

indirect_se: float

Bootstrap standard error of the indirect effect.

n_obs: int

Number of observations.