O Family Medicine doctors have the same results as Specialists (Endocrinologist) for diabetic Patients

I will attach the literature review document that I have so far. I need the Methodology section to have a statistical analysis of the variables I want to study. The reasons for using these specific variables. The detail descriptions of the independent and dependent variables. The regression analysis that will be used. Either logistic regression or linear regression. Are there any confounding variables? Are there any selection biases?