© 2002 by the American Diabetes Association, Inc.
The Impact of Planned Care and a Diabetes Electronic Management System on Community-Based Diabetes CareThe Mayo Health System Diabetes Translation Project![]()
1 Division of Endocrinology, Diabetes, Metabolism and Nutrition, and Internal Medicine, Mayo Clinic, Rochester, Minnesota
OBJECTIVEThe Mayo Health System Diabetes Translation Project sought to assess models of community-based diabetes care and use of a diabetes electronic management system (DEMS). Planned care is a redesigned model of chronic disease care that involves guideline implementation, support of self-management, and use of clinical information systems. RESEARCH DESIGN AND METHODSWe studied adult diabetic patients attending three primary care practice sites in Wisconsin and Minnesota. We implemented planned care at all sites and DEMS in the practice of 16 primary care providers. We assessed quality of diabetes care using standard indicators for 200 patients randomly selected from each site at baseline and at 24 months of implementation. We used multivariable analyses to estimate the association between planned care and DEMS and each quality indicator. RESULTSPlanned care was associated with improvements in measurement of HbA1c (odds ratio 7.0 [95% CI 4.211.6]), HDL cholesterol (5.6 [4.17.5]), and microalbuminuria (5.3 [3.58.0]), as well as the provision of tobacco advice (6.9 [4.710.1]), among other performance measures. DEMS use was associated with improvements in all indicators, including microalbuminuria (3.2 [1.95.2]), retinal examination (2.4 [1.53.9]), foot examinations (2.3 [1.24.4]), and self-management support (2.6 [1.73.8]). Although planned care was associated with improvements in metabolic control, we observed no additional metabolic benefit when providers used DEMS. CONCLUSIONSPlanned care was associated with improved performance and metabolic outcomes in primary care. DEMS use augmented the impact of planned care on performance outcomes but not on metabolic outcomes. Optimal identification of the best translation of evidence to diabetes practice will require longer follow-up or new care-delivery models.
Abbreviations: DEMS, diabetes electronic management system PRP, Provider Recognition Program
Improvement of the quality of diabetes care is a national priority. Practice redesign to support patients with diabetes and to ensure the delivery of evidence-based interventions is likely to improve the quality of diabetes care in the community setting, where most people with diabetes receive medical attention (1). The Mayo Health System Diabetes Translation Project was a practice development, demonstration, and continuous quality improvement project. Its goal was to identify methods to enhance the delivery of evidence-based diabetes care (2,3). We studied whether practice redesign to prospectively plan the provision of diabetes care could improve adherence to national standards in a community setting. It further studied whether this planned care combined with the use of the diabetes electronic management system (DEMS) led to greater adherence to national standards than planned care alone.
The Institutional Review Boards and Ethics Committees of the Mayo Clinic Rochester and Mayo Health System practice sites approved the study protocol, and all participants (patients and physicians) gave informed consent. We have previously described the study design and population of the Translation Project (3). A brief description follows.
Practice sites and patients
We identified patients
Interventions
We began to implement DEMS during the first quarter of 1998. We have described DEMS in detail elsewhere (7). Designated physicians (DEMS providers) used DEMS in the clinical care of patients, entering information at the point of care and incrementally adding their patients to its database. Because many of the DEMS providers and their team (primary care nurse, clinical assistants, and diabetes educator) were computer naïve, each received In addition to their traditional role, the diabetes educators were key facilitators for the Translation Project, the guideline team, and the clinical use of DEMS as a diabetes registry and a medical record, serving as an on-site superuser of DEMS (6). To fulfill these roles, the diabetes educators received formal training in continuous quality improvement and in the use of DEMS.
Outcome measures We also measured metabolic outcomes, including all HbA1c, lipid, and blood pressure values (up to four) obtained during the 12 months before the index visits. We used the most recent clinical and laboratory parameters before each index visit to calculate each patients 10-year coronary risk using the Framingham coronary risk prediction score (8). To quantify health care use, we measured number of physician, emergency room, and hospital visits.
Data collection The information contained in DEMS was either automatically copied into DEMS from other electronic databases (i.e., laboratory test results) or entered by any member of the primary care team while providing care to a patient. As described above, we completed audits of the medical record to collect several patient data items. During these audits, we noted for each patient how many of these items had also been accurately entered into DEMS (in addition to having been entered into the medical record) by members of the primary care team. We used this item count as a metric of the intensity of DEMS use by the health care team (DEMS intensity score). Before DEMS implementation and again 2 years after implementation, we measured the time the patient spent with the primary care nurse and with the provider in a convenience sample of patients of providers using DEMS.
Statistical analyses
At baseline, DEMS providers and their patients were similar to providers not using DEMS and their patients (Table 1). Planned care had a differential impact on performance measures after 2 years of implementation (Table 2). Planned care was associated with improvements in measurement of HbA1c (odds ratio [OR] 7.0 [95% CI 4.211.6]), HDL cholesterol (5.6 [4.17.5]), and microalbuminuria (5.3 [3.58.0]), as well as the provision of tobacco advice (6.9 [4.710.1]), among other performance measures. On the other hand, planned care was associated with significant deterioration in documentation of self-management support. Planned care resulted in improved performance in the ADA PRP-weighted criterion score (P = 0.0001).
DEMS use had positive impact on all performance measurements and was associated with a greater improvement than that seen with planned care (Table 3). DEMS use was associated with significantly improved frequency of measurement of microalbuminuria (OR 3.2 [95% CI 1.95.2]) and documentation of retina examination (2.4 [1.53.9]), foot examinations (2.3 [1.24.4]), self-management support (2.6 [1.73.8]), diet (1.9 [1.23.0]), and exercise advice (2.7 [1.64.5]). DEMS use was also associated with improved compliance with the measurement of HbA1c (4.5 [1.019.5]) and total cholesterol (1.4 [0.82.3]); however, the latter did not reach statistical significance. The effect of DEMS was similar across practice sites (data not shown). Compared with low-intensity use of DEMS, high-intensity use was associated with significantly greater compliance with the measurement of microalbuminuria (40 vs. 60%, P < 0.001), total and HDL cholesterol and triglycerides (65 vs. 100%, P < 0.001), and documentation of self-management support (44 vs. 81%, P < 0.001). Low- and high-intensity DEMS use did not differ in compliance with measurement of HbA1c (96 vs. 100%, P = 0.1) and documentation of retina examination (65 vs. 77%, P = 0.06), foot examination (81 vs. 96%, P = 0.02), and immunizations (69 vs. 89%, P = 0.02).
Planned care was associated with improved metabolic outcomes and a significant reduction in the calculated 10-year coronary risk score (Table 4). Metabolic outcomes (Table 4) and health care use (number of emergency room visits, frequency of hospitalization, and provider visits) did not differ between patients whose providers used DEMS and patients whose providers did not use DEMS. Similarly, there were no differences in metabolic outcomes between low- and high-intensity use of DEMS (data not shown).
At baseline, patients of providers using DEMS spent a median (range) of 5 min (030) with the primary care nurse and 15 min (445) with the provider. Two years after DEMS implementation, time with nurse increased to 9.5 min (034) (P < 0.001) and with provider to 18 min (1055) (P = 0.012), respectively.
The Mayo Health System Translation Project demonstrated that the delivery of planned care either alone or in conjunction with an electronic management system in a primary care setting improved metabolic outcomes. Planned care, as originally advocated by Wagner et al. (1), involves redesigning the health care delivery system to support patient self-management by using clinical information and decision support systems (10). Consistent with others, we found that implementation of planned care in a primary care setting was associated with improved performance measures (1114) and improved metabolic outcomes (13). Few models of care, including planned care, can consistently improve performance measures when more than five preventive measures (as with diabetes) are targeted (12). We have shown that the addition of DEMS (an electronic information management system) to planned care led to improvement in all performance measures (Table 3). In particular, DEMS use improved documentation of self-management support, diet and exercise counseling, and immunizations performance measures that did not improve (instead they deteriorated) with the implementation of planned care alone. Finally, the impact of practice redesign is better assessed at the population level. For instance, a 10% increase in immunizations (similar to the change from 64 to 80% associated with DEMS use in this study) could mean, in a population of 1,000 patients with diabetes followed for 1 year, two fewer deaths and one fewer hospitalization due to pneumonia (15). The expanded role of the diabetes nurse educator in this project provides an example of the role played by members of the health care team in quality improvement activities (3, 1113). All members of the team actively participated in the adoption of guidelines and assisted in the planning of multifaceted interventions. The diabetes nurse educator also served as liaison between specialty and primary care providers (3,16). Because of present limitations of information systems, reorganization of the practice was necessary for successful implementation of DEMS. In the present study, training of a primary care nurse in DEMS use at each practice site proved to be an effective means of collecting data at the point of care before each patient encounter with a DEMS provider (7,17). The present data indicate that effective clinical information systems can be integrated into the clinical process in a primary care setting. Quality improvement requires attention not only to processes but also to outcomes. While use of DEMS was associated with global improvements in all measures of performance, DEMS use was not associated with clinically significant improvements in metabolic outcomes. Long-term improvements in patient outcomes remain elusive (13,1821). Unfortunately, many "final" reports of health services evaluations lack power to demonstrate improvements in patient outcomes. Largely, this is due to funding limitations and changes in funding priority (13). Our study was large enough to detect the incremental impact of DEMS over that of planned care on performance measures. The ability to detect an impact on metabolic outcomes, however, may require a longer study period. Also, DEMS was not designed to provide detailed advice about changes in medications and other management decisions that could intuitively lead to improvement in metabolic outcomes. We have conducted and described pilot implementations of an alternative model of generalist-specialist interaction and decision support using telemedicine and DEMS (3,6). In this model, specialists advised generalists about medication changes and other management strategies that, when followed, appeared to impact glycemic control. Thus, facilitated generalist-specialist communication and decision support systems may be effective in improving patient outcomes. The before-after study design and the lack of control practice sites (which impair our ability to account for secular trends and regression to the mean) weaken the inferences we can draw about the true association between planned care and improved diabetes care. We chose this study design because it was the only one acceptable to the participants at eligible practice sites and to the research team, all of whom were committed to optimal delivery of diabetes care. The sites that were not eligible could not serve as control sites because they did not have effective strategies to collect data during the study period. Lack of randomized allocation, which limits our ability to account for imbalances in known and unknown prognostic factors between patients from providers using and not using DEMS, weakens our inferences about the true association between use of DEMS and improved diabetes care. However, the inference that DEMS use improves diabetes care is strengthened by the positive association between greater intensity of use of DEMS and improved performance measures. In summary, the Mayo Health System Translation Project results indicate that the way in which health care services are organized and delivered can improve documentation of clinical activity, adherence to performance measures, and metabolic outcomes. Further studies will be required to determine whether such services can decrease the cost of care and improve the long-term quality of life of diabetic individuals by preventing or delaying the complications of diabetes.
The authors dedicate this article in memory of Dr. Bruce Zimmerman, colleague and coauthor. The Mayo FoundationNovo Nordisk Alliance and the Mayo Foundation supported this project. According to Mayo Foundation policy, S.A.S. is one of 16 inventors of the DEMS, for which all royalties will support education and clinical research in the care of people with diabetes. The Translation Project Research Group: Mayo Rochester DEMS Support: Barbara Jorgensen, DeAnne Holm, Penny Hanson; Digineer Cincinnati Ohio DEMS Support: William Johnson, Linda Buchanan, Kim Planet; Mayo Health System Regional Practice: Jean Anderson, MD, Kari Aubert, Linda Barneson, LPN, Linda Bauman, RD, Carla Bauer, RN, Ann Bills, RN, Donald Blink, MD, Fred Bogott, MD, David Challe, RD, Pat Culver, RN, Connie Dernbach, LPN, Julie Drake, RN, Cynthia Dube, MD, Mark Edstrom, MD, Lisa Eierman, RD, James Embke, Gene Enders, MD, Bartlett Eriksen, MD, Scott Eslinger, Carol Gomsrud, RN, Kathleen Grabau, LPN, Sandra Harris, Nancy Hartwell, Peg Heimer, LPN, Darlene Helland, LPN, Julie Hendrickson, LPN, Stephanie Jacobsen, LPN, Timothy Johnson, MD, Virginia Jordan, RD, Kimberly Katzenmeyer, Jan Kennedy, Bonnie Kuehn, LPN, Jennifer Langston, LPN, Barry Larson, MD, Julie Larson, Traci Lein, RN, Darren Lokkesmoe, MD, Kathy Lorentz, LPN, Douglas Mallory, MD, Peg Marty, LPN, Carrie Mathias, LPN, Richard Moore, MD, John Mueller, MD, Patty Nelson, LPN, Deb Palys, LPN, Deb Peck, Dale Reid, MD, Denise Reinhardt, Anne Rundquist, LPN, Melody Rutschow, LPN, Meliza Schwark, Judy Seibert, Valerie Semingson, RN, Lynn Severson, RN, Anne Sheppard, RD, Tina Simons, Patti Smith, Evelyn Stamos, RN, Laurie Steinke, David Strobel, MD, Linda Thompson, LPN, David Usher, MD, Chao Vang, Carol Weis, RN, Deb Welch, RN, Betty Winkels, LPN, Lori Wischnack, MD, Kara Wollschlager, Judy Woodford, LPN.
Address correspondence and reprint requests to Steven A. Smith, MD, Mayo W18A, 200 First St., SW, Rochester, MN 55905. E-mail: smith.steven{at}mayo.edu. Received for publication 22 March 2002 and accepted in revised form 29 July 2002. C.A.G. has received grant support from Novo Nordisk. R.A.R. has received grant support and consulting fees from Novo Nordisk. S.S.B. has received grant support from Novo Nordisk and the Mayo Foundation. S.A.S. has received grant support from Novo Nordisk, the American Diabetes Association, and the Mayo Foundation. A table elsewhere in this issue shows conventional and Système International (SI) units and conversion factors for many substances.
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