The Urban Institute took a at the credit records of Americans for a five year period to understand how Americans use debt. Wei Li and Laurie Goodman wrote on the debt patterns that were uncovered.
After deducing that 89% of consumers with credit cards fall into six debt categories they were able to point out that:
Younger borrowers who have a mortgage and a student loan have higher credit scores than older borrowers with a mortgage and a student loan. One possible explanation for this: because mortgage debt is relatively uncommon for younger borrowers (those in their 20s and early 30s) perhaps those who have mortgages at this age have higher incomes and better credit scores in general.
To learn more about the borrowing habits of Americans, head over to The Urban Institute: