Description Usage Arguments Details Value Author(s) References
Mediation analysis based on bootstrap
1 2 3 
x 
A data set 
ram 
RAM path for the mediaiton model 
indirect 
A vector of indirect effec 
v 
Indices of variables used in the mediation model. If omitted, all variables are used. 
method 

ci 

cl 
Confidence level. Can be a vector. 
boot 
Number of bootstraps 
m 
Number of imputations 
varphi 
Percent of data to be downweighted 
st 
Starting values 
robust 
Robust method 
moment 
Select mean structure or covariance analysis. moment=FALSE, covariance analysis. moment=TRUE, mean and covariance analysis. 
max_it 
Maximum number of iterations in EM 
... 
Other options for 
The indirect effect can be specified using equations such as a*b
, a*b+c
, and a*b*c+d*e+f
. A vector of indirect effects can be used indirect=c('a*b', 'a*b+c')
.
The onscreen output includes the parameter estimates, bootstrap standard errors, and CIs.
Zhiyong Zhang and Lijuan Wang
Zhang, Z., & Wang, L. (2013). Methods for mediation analysis with missing data. Psychometrika, 78(1), 154184.
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