Dear stats friends

I have 700 subjects with data on an ordinal DV: heart disease score between 0 and 3. I I want to run a partial correlation between heart disease score and 4 ratio variables (e.g. cigarettes/day, LDL cholesterol).

Main question: I can run this partial correlation in SPSS but I am not clear whether it is OK for a DV which is ordinal.

Any ideas?

Thank you!

W