"env.single" is an R environment containing a data frame of data generated from 100 trials, the true coefficients and the coavariance matrix of the model errors.
An R environment.
a data frame with
Z the treatment assignment,
M the mediator and
R the interested outcome.
a 2 by 2 matrix, which is the coefficients of the model.
a 2 by 2 matrix, which is the covariance matrix of the model errors.
The number of subjects is 100. The coefficients are set to be A = 0.5, C = 0.5 and B = -1. The variances of the model errors are σ_1^2 = 1, σ_2^2 = 4 and the correlation is δ = 0.5. See Section 5.1 of the reference.
Zhao, Y., & Luo, X. (2014). Estimating Mediation Effects under Correlated Errors with an Application to fMRI. arXiv preprint arXiv:1410.7217.
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