3-way interaction

  1. L

    Three-way interactions with longitudinal data

    Hi there, We are trying to examine whether carrying the risk gene for Alzheimer's disease (E4), moderates the effect of a continuous predictor over time (c.RNT#c.Time), on global cognition. In other words, "does carrying (or not carrying) the E4 allele moderate the effect of RNT on global...
  2. K

    3 X 2 X 2 mixed design

    Hi all, First time posting. I am having trouble 1) figuring out spss output for and 2) interpreting findings for a study I conducted with a 3 (rm) X 2 X 2 design (note that I did not intend such a complicated design but a reviewer wants me to include participant sex as a variable. I can...