Good day In my data set I have three grouping variables in total, age_group no_jabs and illness, and a dependent variable severity. I want to determine whether a grouping variable, jabs, has an effect on my continuous variable, severity. I first checked normality of severity with a histogram plot with kernel and normal overlay. CONCLUDED normality. Thereafter I want to test homogeneity of my variances using Levene's test, code I used: proc GLM data = health; *Variance/Levene's test; CLASS age_group no_jabs comorb; MODEL severity = age_group|no_jabs|comorb; output out=ResData r=ResVar p=PredVar; run;quit; and I looked at the Pr > F column in the model row of the output, which is: <.0001: Does this mean I have homogeneity in my variances? If so, how do I finally test the effect of the no_jabs variable on my severity variable?
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