“…Earlier studies (28,29,37) reported that the significantly higher risk of medical noncompliance among African Americans (vs. non-Hispanic whites) was completely explained by a lower socioeconomic status (i.e., the effect of race/ethnicity was no longer significant once the effect of socioeconomic status was controlled). However, two international studies (15,42), in which all immunosuppressive medications, outpatient clinical visits, and laboratory work were free of charge to all transplant patients, reported significantly greater noncompliance among younger transplant recipients. Clearly, socioeconomic status did not directly explain why younger patients were more likely to become noncompliant.…”