Description Usage Arguments Value Author(s) References See Also Examples

Function to test whether the average causal mediation effects and direct effects are significantly different between the treatment and control contitions.

1 2 | ```
## S3 method for class 'mediate'
test.TMint(x, conf.level = x$conf.level, ...)
``` |

`x` |
output from |

`conf.level` |
level of the returned two-sided confidence intervals for the effect differences. By default it is set to the value used in the original mediate call. |

`...` |
additional arguments. |

`test.TMint`

returns an object of class "`htest`

" when applied to a `mediate`

object. See `t.test`

for more explanations of the contents. The function returns an object of class "`htest.order`

" which has its own `print`

method included in this package.

Teppei Yamamoto, Massachusetts Institute of Technology, [email protected].

Tingley, D., Yamamoto, T., Hirose, K., Imai, K. and Keele, L. (2014). "mediation: R package for Causal Mediation Analysis", Journal of Statistical Software, Vol. 59, No. 5, pp. 1-38.

Imai, K., Keele, L. and Tingley, D. (2010) A General Approach to Causal Mediation Analysis, Psychological Methods, Vol. 15, No. 4 (December), pp. 309-334.

Imai, K., Keele, L. and Yamamoto, T. (2010) Identification, Inference, and Sensitivity Analysis for Causal Mediation Effects, Statistical Science, Vol. 25, No. 1 (February), pp. 51-71.

Imai, K., Keele, L., Tingley, D. and Yamamoto, T. (2009) "Causal Mediation Analysis Using R" in Advances in Social Science Research Using R, ed. H. D. Vinod New York: Springer.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | ```
# Examples with JOBS II Field Experiment
# **For illustration purposes a small number of simulations are used**
data(jobs)
# Fit mediator and outcome models allowing for treatment-mediator interaction
b <- lm(job_seek ~ treat + econ_hard + sex + age, data=jobs)
d <- lm(depress2 ~ treat*job_seek + econ_hard + sex + age, data=jobs)
# Test for significance of interaction
fit <- mediate(b, d, sims=50, treat="treat", mediator="job_seek")
test.TMint(fit)
``` |

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