I am running a logistic regression analysis with binary variables on SPSS:
- preterm birth (Y/N)
- hypertension (Y/N), diabetes (Y/N), C section (Y/N), younger than 20 (Y/N), older than 35 (Y/N)
Is it necessary to test the correlation between the independent variables first prior to running the logistic regression model?
If so, how do I test it? Pearson's chi-square?
What are the implications on the logistic regression model?