Section author: Jonas Rafi

ANOVA: Mixed

How to perform a mixed ANOVA in jamovi:
  1. You need one continuous continuous variable for each within-subject measurement (e.g. pre / post), at least one nominal grouping variable with at least two levels (e.g. treatment / control) and one nominal variable to function as a between subject factor (e.g. gender).
    A correct setup should look similar to this:


  2. Select AnalysesANOVARepeated Measures ANOVA.


  3. In the box Repeated Measures Factors: write the name of your outcome variable (e.g. My_scale) and name the levels for each measurement occasion (e.g. Pre, Post and 12 month follow-up). The images below illustrates this.

    add_var_anova_repeated_naming_1 add_var_anova_repeated_naming_2

  4. Drag and drop your outcome variables to their respective cells in Repeated Measures Cells.


  5. Move your grouping variable(s) to Between Subject Factors.


  6. The result is shown in the right panel:


  7. A little more comprehensive introduction into this statistical method is provided by this video.