• Connie Mah Trinacty, Alyce S Adams, Stephen B Soumerai, Fang Zhang, James B Meigs, John D Piette, and Dennis Ross-Degnan.
• Department of Ambulatory Care and Prevention, Harvard Medical School and Harvard Pilgrim Health Care, 133 Brookline Avenue, 6th Floor, Boston, MA 02215, USA. connie_trinacty@hphc.org
• J Gen Intern Med. 2007 Nov 1; 22 (11): 150615131506-13.

BackgroundOne approach to improving outcomes for minority diabetics may be through better self-care. However, minority patients may encounter barriers to better self-care even within settings where variations in quality of care and insurance are minimized.ObjectiveThe objective of the study was to evaluate racial differences in long-term glucose self-monitoring and adherence rates in an HMO using evidence-based guidelines for self-monitoring.DesignRetrospective cohort study using 10 years (1/1/1993-12/31/2002) of electronic medical record data was used.PatientsPatients were 1,732 insured adult diabetics of black or white race newly initiated on hypoglycemic therapy in a large multi-specialty care group practice.MeasurementsOutcomes include incidence and prevalence of glucose self-monitoring, intensity of use, and rate of adherence to national recommended standards.ResultsWe found no evidence of racial differences in adjusted initiation rates of glucose self-monitoring among insulin-treated patients, but found lower rates of initiation among black patients living in low-income areas. Intensity of glucose self-monitoring remained lower among blacks than whites throughout follow-up [IRR for insulin = 0.41 (0.27-0.62); IRR for oral hypoglycemic = 0.75 (0.63, 0.90)], with both groups monitoring well below recommended standards. Among insulin-treated patients, <1% of blacks and <10% of whites were self-monitoring 3 times per day; 36% of whites and 10% of blacks were self-monitoring at least once per day.ConclusionsAdherence to glucose self-monitoring standards was low, particularly among blacks, and racial differences in self-monitoring persisted within a health system providing equal access to services for diabetes patients. Early and continued emphasis on adherence among black diabetics may be necessary to reduce racial differences in long-term glucose self-monitoring.

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