env.historical {cfma} | R Documentation |
Simulated data from the historical influence mediation model
Description
"env.historical" is an R environment containing the data generated from a historical influence mediation model.
Usage
data("env.historical")
Format
An R environment
Z
a
n\times T
data matrix, treatment trajectory ofn
subjects forT
time points.M
a
n\times T
data matrix, mediator trajectory ofn
subjects forT
time points.Y
a
n\times T
data matrix, outcome trajectory ofn
subjects forT
time points.alpha
a
T\times T
matrix model coefficient.beta
a
T\times T
matrix model coefficient.gamma
a
T\times T
matrix model coefficient.
Details
The data was generated from the historical influence mediation model
M(t)=\int_{\Omega_{t}^{1}}Z(s)\alpha(s,t)ds+\epsilon_{1}(t),
Y(t)=\int_{\Omega_{t}^{2}}Z(s)\gamma(s,t)ds+\int_{\Omega_{t}^{3}}M(s)\beta(s,t)ds+\epsilon_{2}(t),
where \alpha(s,t)
, \beta(s,t)
, \gamma(s,t)
are coefficient curves; \Omega_{t}^{j}=[(t-\delta_{j})\vee 0,t]
for j=1,2,3
. Z(t)
is the convolution of hemodynamic response function (HRF) and event onsets.
Examples
data(env.historical)
Z<-get("Z",env.historical)
M<-get("M",env.historical)
Y<-get("Y",env.historical)