• Sherrie H Kaplan, John Billimek, Dara H Sorkin, Quyen Ngo-Metzger, and Sheldon Greenfield.
• Health Policy Research Institute and Department of Medicine, School of Medicine, University of California, Irvine, 100 Theory Suite 110, Irvine, CA, 92697, USA, skaplan@uci.edu.
• J Gen Intern Med. 2013 Oct 1; 28 (10): 134013491340-9.

BackgroundDespite numerous efforts to change healthcare delivery, the profile of disparities in diabetes care and outcomes has not changed substantially over the past decade.ObjectiveTo understand potential contributors to disparities in diabetes care and glycemic control.DesignCross sectional analysis.SettingSeven outpatient clinics affiliated with an academic medical center.PatientsAdult patients with type 2 diabetes who were Mexican American, Vietnamese American or non-Hispanic white (n = 1,484).MeasurementsGlycemic control was measured as hemoglobin A1c (HbA1c) level. Patient, provider and system characteristics included demographic characteristics; access to care; quality of process of care including clinical inertia; quality of interpersonal care; illness burden; mastery (diabetes management confidence, passivity); and adherence to treatment.ResultsUnadjusted HbA1c values were significantly higher for Mexican American patients (n = 782) (mean = 8.3 % [SD:2.1]) compared with non-Hispanic whites (n = 389) (mean = 7.1 % [SD:1.4]). There were no significant differences in HbA1c values between Vietnamese American and non-Hispanic white patients. There were no statistically significant group differences in glycemic control after adjustment for multiple measures of access, and quality of process and interpersonal care. Disease management mastery and adherence to treatment were related to glycemic control for all patients, independent of race/ethnicity.LimitationsGeneralizability to other minorities or to patients with poorer access to care may be limited.ConclusionsThe complex interplay among patient, physician and system characteristics contributed to disparities in HbA1c between Mexican American and non-Hispanic white patients. In contrast, Vietnamese American patients achieved HbA1c levels comparable to non-Hispanic whites and adjustment for numerous characteristics failed to identify confounders that could have masked disparities in this subgroup. Disease management mastery appeared to be an important contributor to glycemic control for all patient subgroups.

47 keywords...

hide…