jamovi

Hi,

I am trying to run a 2^2 factorial anova to identify the effect of 2 IV's (birthweight and gestational age) on several DV's (adhd, self-esteem, relationships, life satisfaction).

I have attached images of the errors I am facing. I think the problem lies around the variable 'birthweight'. I'm going round in circles so can anyone shed any light on the issue please.

Thanks

Would I be better creating a new nominal variable for birthweight: such as

- Normal Birthweight
- Low Birthweight
- Very Low Birthweight
- Extremely Low Birthweight?

Or do I need to change the conversion so have whole numbers e.g. grams?

Using version 2.2.5. Tried on cloud version but same error message

Would I be better creating a new nominal variable for birthweight

yes i think so. at a guess, birth weight is a continuous variable with many unique values, and so shouldn't be provided as a factor.

you could either group birth weights as you say, or use it as a covariate in an ancova.

jonathon

As jonathan says, you have continuous IVs and DVs. You can run multiple regression to test your hypothesis. You also have to make sure if you are hypothesizing an interaction between the two predictors. You got error in ANOVA, because there are two many levels in the IVs and jamovi went over the capacity while deaing with myriads of levels in the IVs (and the interactions between them).
Hope this helps!