Implications of changing national cholesterol education program goals for the treatment and control of hypercholesterolemia

BACKGROUND: Modifications to the National Cholesterol Education Program (NCEP) guidelines lowered optional low-density lipoprotein cholesterol (LDL-C) treatment goals.
OBJECTIVE: We evaluated the implications of widely adopting these optional goals in clinical practice.
DESIGN AND PARTICIPANTS: We performed a cross-sectional study using 1999 to 2002 data from 3,281 U.S. adults aged 20 to 79 years participating the National Health and Nutrition Examination Survey.
MEASUREMENTS: The primary outcomes were the proportions of adults whose fasting LDL-C levels exceeded NCEP recommended and optional targets from 2001 and 2004. We used survey weights to estimate the size of the U.S. population exceeding targets. We examined outcomes for 4 coronary disease risk subgroups described by the NCEP.
RESULTS: Low-density lipoprotein cholesterol values exceeded 2001 NCEP goals for 30.0% of adults, and 35.8% had levels above optional 2004 goals. An estimated 24,900,000 individuals (14.2%) exceeded 2001 thresholds for drug therapy, 46,200,000 (26.3%) exceeded optional 2001 thresholds for drug therapy, and 56,500,000 (32.2%) were above the optional 2004 thresholds for drug therapy. For lower, moderate, moderately high, and high-risk groups, 13.4%, 44.2%, 58.8%, and 71.8%, respectively, exceeded 2001 NCEP goals; 13.4%, 15.7%, 87.4%, and 96.0% of these groups exceeded optional 2004 thresholds for drug therapy.
CONCLUSIONS: In 1999 to 2002, LDL-C levels commonly exceeded 2001 NCEP goals, especially for moderately high and high-risk individuals, and cholesterol-lowering medications were underused. Optional goals promulgated by the NCEP in 2001 and 2004 moderately increased the number of adults with LDL-C above their goal, and greatly increased the number of low, moderately high, and high-risk adults who exceeded LDL-C thresholds, for cholesterol-lowering medication.     

Changes in Disparities Following the Implementation of a Health Information Technology-Supported Quality Improvement Initiative

BACKGROUND  

Health information technology (HIT)-supported quality improvement initiatives have been shown to increase ambulatory care quality for several chronic conditions and preventive services, but it is not known whether these types of initiatives reduce disparities.     

Electronic health record identification of prediabetes and an assessment of unmet counselling needs

Rationale, aims and objectives Large clinical trials demonstrate that lifestyle modification can prevent or delay the onset of diabetes in those with prediabetes. However, recent National Health and Nutrition Survey data suggest that prediabetes often goes unrecognized, and the majority of prediabetic individuals do not report having received lifestyle advice from physicians. We explored whether electronic health record (EHR) query of glucose measurements can identify prediabetic patients, and we estimated rates of prediabetic lifestyle counselling in a large, urban, primary care practice. Methods Electronic search identified patients with plasma glucose levels of 100 to 199 mg dL^?1 between 1 June 2007 and 1 June 2009, excluding those with diabetes or diabetic medications/supplies. From these 5366 patients, 100 randomly selected patients underwent classification into provisional categories based on available EHR data: likely prediabetes, likely diabetes, glucose abnormality in the setting of acute illness, or normal glucose metabolism. In those likely to have prediabetes, we assessed lifestyle modification counselling. Results Fifty‐eight per cent (95% CI 48% to 68%) of patients sampled were likely to have prediabetes. Fourteen per cent of those sampled were likely to have diabetes. Thirty‐one per cent of prediabetics (95% CI 22% to 42%) had documented lifestyle counselling. Counselled patients had a significantly higher baseline mean body mass index compared to those not counselled (34.1 versus 29.9, P = 0.037). Conclusions EHR query using glucose measurements can identify prediabetic patients and those requiring further glucose metabolism evaluation, including those with undiagnosed diabetes. Future research should investigate EHR‐based, population‐level interventions to facilitate prediabetes recognition and counselling.     

Education,literacy, and health: Mediating effects on hypertension knowledge and control

Objective

To determine whether literacy mediates the association between education, hypertension knowledge and control.

Methods

In-person interviews with a literacy assessment and chart review were conducted with 330 hypertensive patients from six primary care safety net clinics. Mediational analysis was used to test the role of literacy skills in explaining the relationship between education and hypertension knowledge and control.

Results

In multivariate analyses that did not make an adjustment for the other variable, both lower educational attainment and more limited literacy were found to be significant independent predictors of poorer hypertension knowledge and control. When literacy was entered into models that included education only, the association between education and knowledge was fully attenuated and no longer significant (Grades 1–8: β = −0.30, 95% CI = −1.44–0.83), while the relationship between education and blood pressure control was only minimally reduced (AOR 2.46, 95% CI 2.10–2.88). More limited literacy skills also was associated with hypertension control in the final model (AOR 2.68, 95% CI 1.54–4.70).

Conclusion

Patient literacy mediated the relationship between education and hypertension knowledge. Literacy was a significant independent predictor of blood pressure control, but only minimally explained the relationship between education and blood pressure.

Practice implications

Health literacy is critical to the design of educational tools to improve knowledge acquisition. However, in order to impact health outcome, future health literacy studies should also address other psychosocial factors that impact motivation and capability to manage disease.