jan mod posted on Wednesday, March 21, 2018 - 5:13 am
I am using the TNIE in mediation analysis. I have a continuous X, binary M and continuous Y. I give two values of the continuous X (-1 SD and +1 SD) that is hypothesized to be mediated by binary mediators. Is the following correct? 1) TNIE has two parts in the equation: the first part is the mean of Y when X=1 (in this case +1 SD) while M varies as it would be for X=1. The second term in the equation is the mean of Y when X=1 while M varies as it would be if X=0 (in this case -1 SD). 2) The effect of TNIE shows me then how much Y increases or decreases when X goes from -1 SD to + 1SD as an indirect effect.