Concentraciones de hemoglobina glucosilada A1c, lipoproteínas de baja densidad y valores de presión arterial en adultos diagnosticados previamente de diabetes mellitus tipo 2

The Diabetes Care Project: an Australian multicentre, cluster randomised controlled trial [study protocol]

BACKGROUND

Diabetes mellitus is an increasingly prevalent metabolic disorder that is associated with substantial disease burden. Australia has an opportunity to improve ways of caring for the growing number of people with diabetes, but this may require changes to the way care is funded, organised and delivered. To inform how best to care for people with diabetes, and to identify the extent of change that is required to achieve this, the Diabetes Care Project (DCP) will evaluate the impact of two different, evidence-based models of care (compared to usual care) on clinical quality, patient and provider experience, and cost.

METHODS/DESIGN

The DCP uses a pragmatic, cluster randomised controlled trial design. Accredited general practices that are situated within any of the seven Australian Medicare Locals/Divisions of General Practice that have agreed to take part in the study were invited to participate. Consenting practices will be randomly assigned to one of three treatment groups for approximately 18 to 22 months: (a) control group (usual care); (b) Intervention 1 (which tests improvements that could be made within the current funding model, facilitated through the use of an online chronic disease management network); or (c) Intervention 2 (which includes the same components as Intervention 1, as well as altered funding to support voluntary patient registration with their practice, incentive payments and a care facilitator). Adult patients who attend the enrolled practices and have established (≥12 month's duration) type 1 diabetes mellitus or newly diagnosed or established type 2 diabetes mellitus are invited to participate. Multiple outcomes will be studied, including changes in glycosylated haemoglobin (primary outcome), changes in other biochemical and clinical metrics, incidence of diabetes-related complications, quality of life, clinical depression, success of tailored care, patient and practitioner satisfaction, and budget sustainability.

DISCUSSION

This project responds to a need for robust evidence of the clinical and economic effectiveness of coordinated care for the management of diabetes in the Australian primary care setting. The outcomes of the study will have implications not only for diabetes management, but also for the management of other chronic diseases, both in Australia and overseas.

TRIAL REGISTRATION

Australian New Zealand Clinical Trials Registry (ACTRN12612000363886); World Health Organisation (U1111-1128-0481).

[Diabetes mellitus in hypertensive population attended in Primary Care in Spain. Blood pressure and lipid control rates]

OBJECTIVES AND METHODS

The aim of this study was to determine the blood pressure and LDL-cholesterol (LDL-c) control rates of hypertensive patients with diabetes mellitus attended in primary care setting in Spain, and to compare the data with those of the hypertensive population without diabetes. For this purpose, we analyzed the subset of diabetic patients of those included in the PRESCOT study (a cross-sectional survey of hypertensive subjects > 18 years attended in primary care). 12,954 patients (49.9% females; 62.1 +/- 10.7 years) were included in the PRESCOT study. Good controls were considered blood pressure < 130/80 mmHg (according to European Society of Hypertension-European Society of Cardiology [ESH-ESC] guidelines) and LDL-c < 100 mg/dl (National Cholesterol Education Program-Adult Treatment Panel III [NCEP-ATP III]).

RESULTS

Overall, 3868 (29.9%) of PRESCOT patients were diabetics (mean age 64.2 +/- 9.8 years; 47.5% males). Almost all the diabetic patients (98.5%) were taking some drug besides the antidiabetic treatment and 84.9% were taking at least 2 drugs. Although diabetic patients were treated with more antihypertensive medication than those without diabetes (48.75% vs 40.85% were on > 2 drugs, p < 0.001), blood pressure control was much lower in diabetics (6.3% vs 32.7%, p < 0.0001). In the same way, LDL-c control was also lower in these patients (12.0% vs 31.9%, p < 0.0001). Only 1.0% of diabetic hypertensives were well controlled for both risk factors (vs 11.9% of non-diabetics, p < 0.0001). Predictors of bad blood pressure control were sedentarism and presence of associated clinical conditions, and for lipid control the younger age, female gender, overweight, alcoholism and non-use of lipid-lowering agents.

CONCLUSIONS

The presence of diabetes in hypertensive population attended in Spanish primary health care is frequent. One out of every three hypertensives who attend the outpatient clinic daily is diabetic. Even though more drugs are prescribed in these patients, blood pressure and LDL-c control rates are significantly lower than in patients without diabetes. In the daily practice of primary care setting, almost no diabetic hypertensive subject is well controlled for blood pressure and LDL-c.