Natural direct effect for loglinear models without the multiplicative interaction

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Description

This function calculates the natural direct effect using the odds ratio for a loglinear model without the multiplicative interaction and under dummy code parametrization

Usage

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ndirect_effect_or(x, y, z, w, t)

Arguments

x

it is the parameter μ^{Y=1}

y

it is the parameter μ^{X=1,Y=1}

z

it is the parameter μ^{Z=1, Y=1}

w

it is the parameter μ_c^{Z=1}

t

it is the parameter μ_c^{X=1,Z=1}

Value

ndirect_effect_or returns the natural direct effect

Author(s)

Gloria Gheno

References

Gheno Gloria (2015),The causal analysis in the loglinear model

Examples

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#> ndirect_effect_or(0.6,0.8,0.5,2,0.7) 
#[1] 0.8039409