Hemoglobin A1C Value for Evaluating a Community Diabetes Education Series
collaboration, community, diabetes, education, hemoglobin a1c
H Jeffreys. Hemoglobin A1C Value for Evaluating a Community Diabetes Education Series. The Internet Journal of Advanced Nursing Practice. 2007 Volume 9 Number 2.
Type 2 diabetes mellitus is a major health concern of increasing incidence. Complications associated with poor management of the disease include increased morbidity, mortality, and financial burden. Group diabetes education programs in community settings have been shown to reduce disease complications and cost. Using collaborative efforts of community leaders, a community diabetes education program was implemented with great success. Participant post intervention hemoglobin A1C levels revealed an overall two point drop, a drop associated with significant reductions in mortality, myocardial infarction, microvascular complications, and health care cost. This project serves as an inexpensive, convenient, and effective model for improving outcomes for diabetic populations in community settings.
Type 2 diabetes mellitus is a major health concern affecting 20.8 million Americans annually. This number is predicted to increase 43% by the year 2020 1 . While 5.9% of the U.S. population has been diagnosed with diabetes, another 2.4% or 4.9 million people with diabetes remain undiagnosed 2 . As the incidence of diabetes increases, so does the associated health care cost. In the United States, one of every five health care dollars is spent on diabetes health care, totaling $132 billion annually 3 . To address the increasing incidence of diabetes and its associated health and economic implications, healthcare providers are directing their attention toward improving diabetes management.
Diabetes is a complex, chronic disease requiring ongoing health care to reduce the risk of both acute and long term complications. Recent transformations in care encourage patients to take a more active approach in managing their health care needs. Traditionally, diabetes care primarily focused on medication, diet, and exercise. In 2001, the Center for Disease Control published a report 4 recommending broad scale health-care system interventions and diabetes self management education in community settings. In 2007, the American Diabetes Association (ADA) standards of medical care position statement 5 supported diabetes self management education (DSME) naming it an essential element in diabetes management. The significant impact of diabetes alerts health providers to recognize the need and prepare for interventions that address the health care needs of the diabetic population reducing both health disparities and cost. Professional community members and leaders in a small community collaborated to implement an affordable, effective diabetes education program.
One nurse practitioner and four family practice physicians form a unique health care team in a family practice setting providing quality health care for local individuals, families, and community members. The team provides care during acute and chronic illness and injury, focusing on disease prevention and health promotion for patients six months of age and older. Like other communities throughout the nation, this community has experienced an alarming increased in the incidence of diabetes and diabetes related complications 6 . Recognizing the need for additional interventions to address these growing concerns, the clinic's healthcare team collaborated with local community leaders to implement a community education series.
The local county extension agent along with the family nurse practitioner developed a local coalition of support consisting of a city commissioner, pharmacist, county treasurer, and county tax assessor. The coalition assisted the extension agent and nurse practitioner with marketing, registration, data collection, and promotion of the diabetes education program. The
The clinic initially implemented the program in 2004 and continues to offer the sessions on a regular basis. At the beginning and end of each class series, participants are asked to complete an evaluation form that examines diabetes knowledge and management strategies, in addition to other pertinent information including age, race, and health history. A primary goal of the
Glucose control is fundamental to the management of diabetes and is best judged by the combination of the patients self monitored blood glucose results (SMBG) and Hgb A1C 8 . The Hgb A1C is the average measurement of the individuals' blood glucose level over a preceding 2-3 month period. A general A1C goal for most diabetics patients is less than 7%, but goals should be individualized and as close to the non-diabetes value (4% to 6%) as possible in the absence of hypoglycemic events 5 . Currently, only 37% of diabetics have A1C's less than 7% 4 , again illustrating the need for effective education and improved diabetes management.
Several theories support and guide the implementation of the community diabetes education series. The first theory involves the use of diabetes self management education (DSME). Self management, which is critical to glucose management, refers to the patient's ability to address the symptoms, treatment, physical and social consequences, and lifestyle changes resulting from chronic illness 9 . Patients who actively participate in self care and clinical decision making are more likely to adhere to the recommended plan of care. DSME is the process of teaching persons to manage their disease. The recommended timing for DSME is initially at diagnosis and as needed thereafter.
A meta-analysis 10 examined self-management education for adults with type 2 diabetes and found improvements in immediate Hgb A1C values. Additionally, Berikia, Meye, Kazlauskaite, Savoy, Kozik, and Fogelfeld 11 found DSME to be associated with improved diabetes knowledge, improved self-care behavior, and improved clinical outcomes, particularly improvements in glycemic control as evidenced by lowering Hgb A1C values.
The American Association of Diabetes Educators recognize seven self care behaviors 12 as critical to diabetes self management. These behaviors include monitoring, taking medications, being active, healthy eating, problem solving, healthy coping, and reducing risk factors. The
A second supporting theory includes that of adult learning 13 . Malcolm Knowles, a pioneer in the field of adult learning, identified active engagement of the participant in the educational content as a key characteristic. In order to gain such engagement, the participant must be respected, and his/her goals be of both practical and immediate relevance to the participant's life experiences. The
The last theoretical consideration implemented is that of group learning. A randomized study by Rickheim, Weaver, Flader, and Kendall 14 compared the effectiveness of individual versus group education for diabetes patients. The study found that group learning resulted in greater improvements in glycemic control and provided a more efficient and cost effective approach than individual diabetes education. Norris and associates 10 revealed that the benefit of improved glycemic control following DSME declines over time; however, increased contact and follow up increases the positive glycemic effects.
A local university granted this author IRB approval to perform an electronic chart review of all consenting class participants evaluating both pre and post education Hgb A1C levels. The class included 19 participants, of which 13 met the evaluation inclusion criteria of 18 years or older, a diagnosis of type 2 diabetes, and lab data available within the designated time frame. The participants also had to complete all five classes in the series. Participants' Hgb A1C levels were recorded within a two month period prior to the first class date, and at least two months after completion of the last class. The inclusion participants included seven Caucasian males and six Caucasian females with a mean age of 64.71 years. Eleven participants (85%) reported being diagnosed with diabetes between 2 - 4 years and two participants (15%) reported having diabetes for one year or less. Nine participants (64%) reported no prior diabetes education classes. Seven family members without diabetes participated in the education series in support of a family member with diabetes, but did not contribute to the data collection.
The participants' pre and post educational intervention Hgb A1C values were entered into an SPSS program and a paired sample t test was performed (n=13). The results (Figure 1) revealed post education Hgb A1C values were significantly lower (M = 6.73, SD = 0.73) than the pre education Hgb A1C values (M = 8.72, SD = 2.91), t (12) = 2.63, p < .05. Results are encouraging and provide evidence for similar continued educational efforts in the community.
Research has demonstrated a 1% decrease in Hgb A1C results in a 21% reduction in diabetes associated mortality, a 14% reduction in myocardial infarction, and a 37% reduction in microvascular complications. 15 Given that this small sample of participants experienced an overall 2% drop, the expectation is that this group will also experience benefits equal to or greater than the demonstrated research benefits. Increased glycemic control and greater Hgb A1C reduction has also been shown to significantly reduce macrovascular complications, improving overall life span and diabetes health outcomes 16 .
The mean value of the post educational intervention Hgb A1C level was 6.73%, a value consistent with the general recommendation of less than 7% 5 . An inverse relationship has been established between the improvements in diabetic health and the associated health care cost. For the participants of this small class alone, the potential lifetime health care cost savings resulting from improved management of diabetes is estimated to be $686,933, well over half a million dollars. 17
Health providers must acknowledge and anticipate the health needs specific to the individuals, families, and communities for which they provide care. Community health providers and leaders interested in improving community health and lowering community health care cost can collaborate in the implementation of similar educational programs in their respected communities. A nurse practitioner providing care in a community setting is in a unique position to not only recognize the community health care needs firsthand, but also become an advocate for those needs by developing and leading interdisciplinary teams. Highly diverse, professional team members contribute individual expertise while collaborating to achieve recognized national and community health goals. The end result is an overall improvement in the health and sustainability of affected individuals, families, and communities.
Implementation of the
Holly L. Jeffreys, MSN, RN, FNP-BC 911 23 rd Street Canyon, Texas 79015 Phone: (806) 640-4215 Fax: (806) 655-0522 Email: firstname.lastname@example.org