Quality of diabetes care predicts the development of cardiovascular events: results of the QuED study.

BACKGROUND AND AIM: In the context of the QuED Study we assessed whether a quality of care summary score was able to predict the development of cardiovascular (CV) events in patients with type 2 diabetes. METHODS AND RESULTS: The score was calculated using process and intermediate outcome indicators (HbA1c), blood pressure, low-density lipoprotein cholesterol, microalbuminuria) and ranged from 0 to 40. Overall, 3235 patients were enrolled, of whom 492 developed a CV event after a median follow-up of 5 years. The incidence rate (per 1000 person-years) of CV events was 62.4 in patients with a score < or =10, 54.8 in those with a score between 15 and 20, and 39.8 in those with a score >20. In adjusted multilevel regression models, the risk to develop a CV event was 89% greater in patients with a score of < or =10 (rate ratio [RR]=1.89; 95% confidence interval [CI] 1.43-2.50) and 43% higher in those with a score between 10 and 20 (RR=1.43; 95% CI 1.14-1.79), as compared to those with a score >20. A difference between centers of 5 points in the mean quality score was associated with a difference of 16% in CV event risk (RR=0.84; 95% CI 0.72-0.98). CONCLUSION: Our study documented for the first time a close relationship between a score of quality of diabetes care and long-term outcomes.

Clinical and psychological predictors of incidence of self-reported erectile dysfunction in patients with type 2 diabetes.

PURPOSE: We evaluated the predictors of the incidence of erectile dysfunction in patients with type 2 diabetes mellitus and identified subgroups of patients in whom the interaction between clinical and psychological characteristics determined an increase in the risk of erectile dysfunction. MATERIALS AND METHODS: The study was based on 670 individuals. The presence of erectile dysfunction and the severity of depressive symptoms were investigated with a questionnaire filled in every 6 months for 3 years. Poisson regression was used to calculate incidence rates. To evaluate interactions among the different variables and identify distinct and homogeneous subgroups in terms of incidence of erectile dysfunction, RECursive Partitioning and AMalgamation method was used. RESULTS: Overall erectile dysfunction developed in 192 men with type 2 diabetes, with an incidence rate of 166.3 per 1,000 person-years. Age, insulin treatment, hemoglobin A1c greater than 8.0%, total cholesterol greater than 3.88 mmol/l and severity of depressive symptoms represented independent predictors of erectile dysfunction. RECursive Partitioning and AMalgamation analysis identified 5 classes with a marked variation in the risk of erectile dysfunction. Patients with low levels of depressive symptoms and hemoglobin A1c 8.0% or less showed the lowest risk of erectile dysfunction. Compared with this subgroup patients with higher levels of depressive symptoms and treated with insulin had a 3-fold risk of erectile dysfunction. Age, smoking, high cholesterol levels and neuropathy were globally predictive variables associated with an increased risk of erectile dysfunction. CONCLUSIONS: The incidence of erectile dysfunction is predicted by modifiable risk factors. Even in diabetes, psychological problems can contribute to the pathogenesis of erectile dysfunction, in addition to organic causes.

Are Type 2 diabetic patients offered adequate foot care? The role of physician and patient characteristics.

In the context of a nationwide outcomes research program on Type 2 diabetes, we investigated physician and patient practices related to foot care. Patients filled in a questionnaire investigating whether they had received information about foot care, how often they had had their feet examined in the last year, and how often they usually checked their feet. Analyses were adjusted for patient case-mix and physician-level clustering. Overall, 3564 patients were recruited by 125 diabetes outpatient clinics (DOCs) and 103 general practitioners (GPs), of whom 6.8% suffered form lower limb complications. The presence of foot complications was correlated with insulin treatment, cigarette smoking, low levels of school education, and the presence of other diabetic complications. More than 50% of the patients reported that they had not had their feet examined by their physician and 28% referred that they had not received foot education. Patients with lower levels of school education and income, as well as overweight individuals, were less likely to receive foot education. Physicians tended to perform foot examination more often in males, low-income patients, those with foot complications, and those treated with insulin, but not in patients with the highest risk of foot complications, that is, those with diabetic neuropathy or peripheral vascular disease (PVD). GPs tended to perform foot examination less frequently than diabetologists do. Foot self-examination was not performed by 33% of the patients. Those individuals who had received foot education or had had their feet examined were more likely to check their feet regularly. A substantial proportion of Type 2 diabetic patients is not offered adequate foot care, even in the presence of major risk factors for lower limb complications. Patient knowledge and practices are strongly related to physicians' attitudes.

Longitudinal assessment of quality of life in patients with type 2 diabetes and self-reported erectile dysfunction.

OBJECTIVE: In the context of the QuED (Quality of Care and Outcomes in Type 2 Diabetes) project, we evaluated the longitudinal changes over 3 years in quality of life (QoL) in patients with type 2 diabetes according to the presence or the development of erectile dysfunction (ED). RESEARCH DESIGN AND METHODS: Patients were requested to fill in a questionnaire investigating the presence of ED and QoL (SF-36 Health Survey, depression symptoms [Center for Epidemiologic Studies-Depression], and quality of sexual life) every 6 months for 3 years. The analyses were based on multilevel models, adjusted for patient clinical and sociodemographic characteristics. RESULTS: The study involved 1,456 patients, of whom 34% reported frequent erectile problems at baseline; 192 developed ED during the follow-up. No changes in QoL measures were detected in patients without ED; in those with ED at baseline, a worsening in all SF-36 scales was observed, reaching statistical significance for physical functioning (P = 0.03). Among patients who developed ED during the study, a deterioration in all SF-36 dimensions and a worsening in depressive symptoms preceded the development of ED. The onset of ED was associated with a further marked worsening in physical functioning (P = 0.0008), general health perception (P = 0.02), and social functioning (P = 0.04) on SF-36 subscales, as well as in the summary physical and mental components scores (P = 0.04 and P = 0.07, respectively). The development of ED was also associated with a highly significant increase in depressive symptoms (P = 0.001) and a marked decrease in quality of sexual life (P < 0.0001). CONCLUSIONS: This longitudinal study documents for the first time the impact of ED onset on several aspects of QoL in patients with type 2 diabetes. The study also shows that QoL tended to further decrease during 3 years in patients with ED at baseline but not in those without this condition.

Impact of physicians' beliefs and practices on cholesterol levels in patients with type 2 diabetes: a longitudinal assessment.

BACKGROUND: Clinical trials demonstrate significant benefit from cholesterol management for patients with type 2 diabetes. The aim of this work was to explore the correlates of lipid management in patients with type 2 diabetes, including the subjective beliefs of physicians, setting of care, and patient-related factors. METHODS: This longitudinal outcomes research study involved 2359 patients with type 2 diabetes recruited by 111 general practitioners and 214 physicians practicing in diabetes clinics. Physicians' beliefs were assessed through a questionnaire administered when the study started in 1998. Main outcome measures were total cholesterol (TC) and LDL cholesterol (LDL-C) levels over 3 years and the proportion of patients treated with lipid-lowering drugs (LLDs). RESULTS: Less than one-third of the physicians (27%) stated that they routinely started pharmacologic therapy for TC values > or =200 mg/dL (more aggressive), whereas 46% considered a TC level > or =240 mg/dL as the threshold for the initiation of treatment (less aggressive). During 3 years of observation, mean TC and LDL-C levels decreased from 215 +/- 40 mg/dL to 203 +/- 37 mg/dL and from 135 +/- 36 mg/dL to 126 +/- 35 mg/dL respectively, while the proportion of patients treated with LLDs increased from 13.2% to 24.6%; in particular, among individuals cared for by the more aggressive physicians, 30.0% were taking LLDs after 3 years, while only 17.7% of those followed by the less aggressive physicians and 18.1% of those followed by >1 physician were being treated with LLDs. Multilevel analysis showed that physicians' beliefs were an independent predictor of TC levels over the 3-year period. In patients treated with LLDs, TC levels decreased on average by 14%, and LDL-C levels decreased by 20%. CONCLUSION: Our data show that physicians' beliefs in more aggressive management strategies will result in better mean TC values over a 3-year period.

Correlates of satisfaction for the relationship with their physician in type 2 diabetic patients.

In the context of an Italian nation-wide outcomes research program on type 2 diabetes, we investigated the contribution of both patient and setting-related factors to patient satisfaction with their relationship with their physicians. The level of patient satisfaction was measured using the American Board of Internal Medicine (ABIM) 14 patient satisfaction questionnaire. The main results were obtained using multilevel analysis, a statistical technique that takes into account the clustered nature of our data. Overall, 3563 patients were recruited by 101 diabetologists and 103 general practitioners (GPs). Information on patients' satisfaction was available for 2515 patients (71% of the whole sample). Patients' satisfaction was related to patient characteristics and attitudes, but not with physician's sex, age, speciality, and setting of care. In particular, patients who were less likely to delegate to physicians responsibility for diabetes management and those perceiving a lower degree of involvement in disease management showed lower levels of satisfaction. Lower satisfaction scores were also related to lower levels of school education, more severe clinical conditions, and lower psychological adaptation to diabetes. However, patients reporting higher levels of diabetes related worries and more frequent encounters with health care providers showed higher levels of satisfaction. In conclusion, patient satisfaction with physicians' humanness and communication skills is strongly related to personal characteristics, attitudes, expectations, and perceived health. In deciding the best decision-making approach to adopt in individual patients, it is of primary importance to measure how the patient perceives and engages in relationships.

Quality of care and outcomes in type 2 diabetic patients: a comparison between general practice and diabetes clinics.

OBJECTIVE: The role of general practice and diabetes clinics in the management of diabetes is still a matter of debate. Methodological flaws in previous studies may have led to inaccurate conclusions when comparing the care provided in these different settings. We compared the care provided to type 2 diabetic patients attending diabetes outpatient clinics (DOCs) or being treated by a general practitioner (GP) using appropriate statistical methods to adjust for patient case mix and physician-level clustering. RESEARCH DESIGN AND METHODS: We prospectively evaluated the process and intermediate outcome measures over 2 years in a sample of 3,437 patients recruited by 212 physicians with different specialties practicing in 125 DOCs and 103 general practice offices. Process measures included frequency of HbA(1c), lipids, microalbuminuria, and serum creatinine measurements and frequency of foot and eye examinations. Outcome measures included HbA(1c), blood pressure, and total and LDL cholesterol levels. RESULTS: Differences for most process measures were statistically significantly in favor of DOCs. The differences were more marked for patients who were always treated by the same physician within a DOC and if that physician had a specialty in diabetology. Less consistent differences in process measures were detected when patients followed by GPs were compared with those followed by physicians with a specialty other than diabetology. As for the outcomes considered, patients attending DOCs attained better total cholesterol levels, whereas no major differences emerged in terms of metabolic control and blood pressure levels between DOCs and GPs. Physicians' specialties were not independently related to patient outcomes. CONCLUSIONS: Being followed always by the same physician in a DOC, particularly if the physician had a specialty in diabetes, ensured better quality of care in terms of process measures. In the short term, care provided by DOCs was also associated with better intermediate outcome measures, such as total cholesterol levels.

Identifying patients with type 2 diabetes with a higher likelihood of erectile dysfunction: the role of the interaction between clinical and psychological factors.

PURPOSE: We estimated the prevalence of erectile dysfunction in patients with type 2 diabetes and identified subgroups of patients in which the interaction among clinical, psychological and sociodemographic characteristics determined an increased likelihood of erectile dysfunction. MATERIALS AND METHODS: The presence of erectile dysfunction was based on patient self-reporting. Clinical information was collected by participating physicians. The severity of depressive symptoms was investigated using the Center for Epidemiological Studies Depression scale. To evaluate interactions among the variables investigated and identify distinct, homogeneous subgroups of patients with different odds ratios for erectile dysfunction a tree growing technique was used. RESULTS: In the 1,460 patients studied the prevalence of severe and mild-moderate erectile dysfunction was 34% and 24%, respectively. While severe erectile dysfunction was mainly related to the severity of diabetes, mild-moderate dysfunction was independent of clinical variables and only associated with the severity of depressive symptoms. The tree growing technique led to the identification of 6 classes characterized by a marked difference in the prevalence of severe erectile dysfunction of between 19% and 65%. Patients on diet alone showed the lowest prevalence of erectile dysfunction and were considered the reference category, while patients treated with insulin who had neuropathy represented the subgroup with the highest likelihood of erectile dysfunction (OR = 7.2, 95% CI 3.9 to 13.2). In patients treated with oral agents the odds ratio for erectile dysfunction was 2.7 (95% CI 1.8 to 3.9) for those with severe depressive symptoms and 1.9 (95% CI 1.3 to 2.7) for current/former smokers with low depressive symptoms. Patient age, retinopathy and cardiac-cerebrovascular disease were globally predictive variables associated with an increased likelihood of erectile dysfunction. CONCLUSIONS: Our data illustrate the interplay of clinical and psychological factors in determining the risk of erectile dysfunction in type 2 diabetes and can help identify those for whom much greater attention is needed to detect erectile problems.

Role of organizational factors in poor blood pressure control in patients with type 2 diabetes: the QuED Study Group--quality of care and outcomes in type 2 diabetes.

BACKGROUND: A large body of evidence supports the need for reducing the cardiovascular burden of diabetes. Only indirect and occasional data describe the adequacy of routine management of hypertension in patients with diabetes. The aim of this study was to explore the interplay of some potential key determinants of quality of antihypertensive care, including the settings, physicians' beliefs about blood pressure (BP) control, and patient-related factors. METHODS: We evaluated physicians' beliefs about BP control using questionnaire responses at study entry. A sample of 3449 patients with type 2 diabetes mellitus, of whom 1782 (52%) were considered to have hypertension, was recruited by 212 physicians practicing in 125 diabetes outpatients clinics (DOCs) and 106 general practitioners (GPs). We evaluated the type and number of antihypertensive agents used and the BP values at study entry and after 1 year of follow-up. We used multilevel analysis to investigate correlates of poor BP control (> or =160/90 mm Hg). RESULTS: Only 16% of GPs and 14% of DOC physicians targeted BP values of less than 130/85 mm Hg. At study entry, 6% of the patients had values below 130/85 mm Hg, whereas 52% showed values of 160/90 mm Hg or greater. Only 12% of subjects were treated with more than 2 drugs at study entry, compared with 16% at the 1-year follow-up (P =.001). Multilevel analysis showed that patients attending DOCs had a more than 2-fold increased risk for inadequate BP control, compared with those treated by GPs. The risk for poor BP control was 2 times higher for patients treated by male physicians compared with those treated by female physicians, and it was halved when the physician responsible for the diabetes care specialized in diabetology or endocrinology. CONCLUSION: In a model situation of comorbidity, the overall quality of care depends on structural and organizational factors, which are likely to be more influential than existing guidelines.

Erectile dysfunction and quality of life in type 2 diabetic patients: a serious problem too often overlooked.

OBJECTIVE: Within the context of a large, nationwide outcomes research program in type 2 diabetes, we assess the prevalence of self-reported erectile dysfunction and evaluate its impact on quality of life. RESEARCH DESIGN AND METHODS: The study involved 1,460 patients enrolled by 114 diabetes outpatient clinics and 112 general practitioners. Patients were asked to complete a questionnaire investigating their ability to achieve and maintain an erection. Various aspects of quality of life were also assessed depressive using the following instruments: SF-36 Health Survey, diabetes health distress, psychological adaptation to diabetes, depressive symptoms (CES-D scale), and quality of sexual life. RESULTS: Overall, 34% of the patients reported frequent erectile problems, 24% reported occasional problems, and 42% reported no erectile problems. After adjusting for patient characteristics, erectile dysfunction was associated with higher levels of diabetes-specific health distress and worse psychological adaptation to diabetes, which were, in turn, related to worse metabolic control. Erectile problems were also associated with a dramatic increase in the prevalence of severe depressive symptoms, lower scores in the mental components of the SF-36, and a less satisfactory sexual life. A total of 63% of the patients reported that their physicians had never investigated their sexual problems. CONCLUSIONS: Erectile dysfunction is extremely common among type 2 diabetic patients and is associated with poorer quality of life, as measured with generic and diabetes-specific instruments. Despite their relevance, sexual problems are seldom investigated by general practitioners and specialists.