INS and diabetes mellitus: Multivariable linear regression showed that diabetes distress was associated with a 0.2 (95% CI 0.2–0.3) lower score for each year older age, 7.6 (95% CI 5.4–9.7) higher score for current insulin use, and 9.3 (95% CI 5.3–13.2) higher score for a history of diabetes foot ulcers.