Hi,

IV stands for independent variable, DV for dependent variable, MV for mediating variable, SE for standard error, LLCI and ULCI for lower and upper limits of the 95% confidence interval, respectively.

In the text, you might say something like: The independent variable (IV) significantly influenced both the mediating variable (MV; b = 0.50, p < .001) and the dependent variable (DV; b = 0.35, p < .001). The MV also significantly affected the DV (b = 0.25, p = .002).

Hope this helps.