I have run a study on auditory perception with a sample of children with ASD. Given the high rates of comorbid diagnoses in individuals with ASD, I have some participants with multiple diagnoses (e.g., ADHD, anxiety, speech-language impairment). Is there a way I can control for these comorbid diagnoses so I do not have to exclude these participants? Is there a way to use secondary diagnosis as a covariate? Could I run the analysis with and without the participants who have additional diagnoses? Thank you in advance for any feedback.