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Prevalence of Complications in Adults with Diabetes
|Frequency in 100||95% Confidence Interval|
|Cases per 1,000||95% Confidence Interval|
|1||Data Source: 2008-2010 Michigan Behavioral Risk Factor Surveillance System. Bureau of Epidemiology, Division of Genomics, Perinatal Health and Chronic Disease Epidemiology, Michigan Department of Community Health.
Methods and Limitations: The Michigan Behavioral Risk Factor Surveillance System (MI BRFSS) comprises annual, state-level telephone surveys of the non-institutionalized adult population, 18 years and older. The MI BRFSS provides self-reported information on behavioral risk factors for disease and on preventive health practices with the state. About one-third of people with diabetes do not know they have it, and therefore cannot self-report it. As a result of this, we assume that the MI BRFSS underestimates the true prevalence of diabetes.
Diabetes Indicator: Respondents were considered to have diabetes if they responded "yes" to the question, "Has a doctor ever told you that you have diabetes?" Women who indicated that they only had diabetes during pregnancy were not considered to have diabetes. Where feasible and to improve the precision of the estimates, 3-year averages were used to estimate the prevalence of complications.
|1a||Data Source: 2010 MI BRFSS only.
Data Source: Table B.8 for Diabetics, 2010 Annual Data Report, U.S. Renal Data System.
Methods: The U.S. Renal Data System (USRDS) is a surveillance system for end-stage renal disease (ESRD) funded by the National Institute of Diabetes and Digestive and Kidney Diseases of the National Institutes of Health. USRDS collects, analyzes, and distributes information from clinical and claims data reports to the Centers for Medicare and Medicaid Services (CMS) regarding patients being treated for ESRD. CMS reimburses most of the total cost of ESRD treatment in the United States and is estimated to include more than 93 percent of the ESRD population in the United States. The numerator is the point prevalence count from the USRDS. The denominator is the estimated diagnosed diabetes population in Michigan using the estimated prevalence from the Michigan Behavioral Risk Factor Surveillance System and the intercensal population estimate data from the National Center for Health Statistics. The USRDS may underestimate the true rate of ESRD. Delays in reporting the data occur and some Michigan residents may have sought care out-of-state.
|3||Data Source: 2009 Michigan Inpatient Database, Michigan Health and Hospital Association.
Methods: The Michigan Inpatient Database (MIDB) collects data on hospital discharges. Diabetes discharges with lower limb amputation were identified using the ICD-9 code 250 in any diagnosis listed and the procedure code 841 (dropping all procedures that were a result of trauma, ICD-9 codes 895-897). The denominator is the estimated diagnosed diabetes population in Michigan using the estimated prevalence from the Michigan Behavioral Risk Factor Surveillance System and the intercensal population estimate data from the National Center for Health Statistics. Because hospital discharges and not individual persons, hospital discharge rates for diabetes-related diseases may not necessarily reflect rates per person; that is, persons who are hospitalized more than once in a year may be counted more than once.