School-level self-reported versus objective measurements of body mass index in public high school students

Population-level surveillance of student weight status (particularly monitoring students with a body mass index (BMI) ≥95th percentile) remains of public health interest. However, there is mounting concern about objectively measuring student BMI in schools. Using data from the nation's largest school district, we determined how closely students' self-reported BMI approximates objectively-measured BMI, aggregated at the school level, to inform decision-making related to school BMI measurement practices. Using non-matched data from n = 82,543 students with objective height/weight data and n = 7676 with self-reported height/weight from 84 New York City high schools (88% non-white and 75% free or reduced-price meal-eligible enrollment), we compared school-level mean differences in height, weight, BMI, and proportion of students by weight status, between objective and self-reported measures. At the school-level, the self-reported measurement significantly underestimated weight (-1.38 kg; 95% CI: -1.999, -0.758) and BMI (-0.38 kg/m2; 95% CI: -0.574, -0.183) compared to the objective measurement. Based on the objective measurement, 12.1% of students were classified as having obesity and 6.3% as having severe obesity (per CDC definition); the self-report data yielded 2.5 (95% CI: -1.964, -0.174) and 1.4 (95% CI: -2.176, -0.595) percentage point underestimates in students with obesity and severe obesity, respectively. This translates to 13% of students with obesity and 21% of students with severe obesity being misclassified if using self-reported BMI. School-level high school students' self-reported data underestimate the prevalence of students with obesity and severe obesity and is particularly poor at identifying highest-risk students based on BMI percentile.

Context, importance, and process for creating a body mass index surveillance system to monitor childhood obesity within the New York City public school setting

The Office of School Health, a joint program of the Departments of Health and Education, administers New York City’s (NYC) body mass index (BMI) surveillance system to monitor childhood obesity. We describe the context, importance, and process for creating a multi-agency, school-based BMI surveillance system using BMI collected from annual FITNESSGRAM® physical fitness assessments conducted as part of a larger physical activity and wellness curriculum in NYC public schools. We also summarize our current system and methodology, highlighting the types of data and data sources that comprise the system and partnership between the Departments of Health and Education that enable data sharing. Strategies for addressing threats to data quality, including missing data, biologically implausible values, and imprecise/subjective weight or height equipment are discussed. We also review current and future surveillance data products, and provide recommendations for collecting, analyzing, interpreting, and reporting BMI data for childhood obesity surveillance. Collaboration between Departments of Health and Education as well as attention to safeguards of BMI reporting and data quality threats have enabled NYC to collect high quality BMI data to accurately monitor childhood obesity trends. These findings have implications for youth BMI surveillance systems in the United States and globally.

Developing a statewide childhood body mass index surveillance program

BACKGROUND

Several states have implemented childhood obesity surveillance programs supported by legislation. Representatives from Idaho wished to develop a model for childhood obesity surveillance without the support of state legislation, and subsequently report predictors of overweight and obesity in the state.

METHODS

A coalition comprised of the Idaho State Department of Education and 4 universities identified a randomized cluster sample of schools. After obtaining school administrator consent, measurement teams traveled to each school to measure height and weight of students. Sex and race/ethnicity data were also collected.

RESULTS

The collaboration between the universities resulted in a sample of 6735 students from 48 schools and 36 communities. Overall, 29.2% of the youth in the sample were classified as overweight or obese, ranging from 24.0% for grade 1 to 33.8% for grade 5. The prevalence of overweight and obesity across schools was highly variable (31.2 ± 7.58%). Hierarchical logistic regression indicated that sex, age, race/ethnicity, socioeconomic status, and region were all significant predictors of overweight and obesity, whereas school was not.

CONCLUSIONS

This coalition enabled the state of Idaho to successfully estimate the prevalence of overweight and obesity on a representative sample of children from all regions of the state, and subsequently identify populations at greatest risk.

Design of a trial to evaluate the impact of clinical pharmacists and community health promoters working with African-Americans and Latinos with diabetes

BACKGROUND

Given the increasing prevalence of diabetes and the lack of patients reaching recommended therapeutic goals, novel models of team-based care are emerging. These teams typically include a combination of physicians, nurses, case managers, pharmacists, and community-based peer health promoters (HPs). Recent evidence supports the role of pharmacists in diabetes management to improve glycemic control, as they offer expertise in medication management with the ability to collaboratively intensify therapy. However, few studies of pharmacy-based models of care have focused on low income, minority populations that are most in need of intervention. Alternatively, HP interventions have focused largely upon low income minority groups, addressing their unique psychosocial and environmental challenges in diabetes self-care. This study will evaluate the impact of HPs as a complement to pharmacist management in a randomized controlled trial.

METHODS/DESIGN

The primary aim of this randomized trial is to evaluate the effectiveness of clinical pharmacists and HPs on diabetes behaviors (including healthy eating, physical activity, and medication adherence), hemoglobin A1c, blood pressure, and LDL-cholesterol levels. A total of 300 minority patients with uncontrolled diabetes from the University of Illinois Medical Center ambulatory network in Chicago will be randomized to either pharmacist management alone, or pharmacist management plus HP support. After one year, the pharmacist-only group will be intensified by the addition of HP support and maintenance will be assessed by phasing out HP support from the pharmacist plus HP group (crossover design). Outcomes will be evaluated at baseline, 6, 12, and 24 months. In addition, program and healthcare utilization data will be incorporated into cost and cost-effectiveness evaluations of pharmacist management with and without HP support.

DISCUSSION

The study will evaluate an innovative, integrated approach to chronic disease management in minorities with poorly controlled diabetes. The approach is comprised of clinic-based pharmacists and community-based health promoters collaborating together. They will target patient-level factors (e.g., lack of adherence to lifestyle modification and medications) and provider-level factors (e.g., clinical inertia) that contribute to poor clinical outcomes in diabetes. Importantly, the study design and analytic approach will help determine the differential and combined impact of adherence to lifestyle changes, medication, and intensification on clinical outcomes.

TRIAL REGISTRATION

ClinicalTrials.gov identifier: NCT01498159.

A pharmacist and health promoter team to improve medication adherence among Latinos with diabetes

BACKGROUND

There is a need to improve blood glucose levels of underserved Latino patients with uncontrolled diabetes.

OBJECTIVE

To determine the feasibility of a pharmacist and health promoter team designed to address the barriers to medication adherence and adjustment and improve self-care among Latinos with type 2 diabetes.

METHODS

Clinical staff at the University of Illinois at Chicago Medical Center referred Latino patients with uncontrolled diabetes (hemoglobin A(1c) [A1C] > or =8.0%) to the study. A research assistant assessed patients on diabetes and medical history, medication list, medication adherence and related habits, health literacy, diabetes knowledge and numeracy, beliefs in benefits of diabetes therapy, depression, social support, and access to care. A bilingual, bicultural health promoter reviewed these assessments and worked with patients through home and clinic visits and telephone calls. The health promoter communicated with a pharmacist to receive assistance in medication management (reconciliation and adjustment). Participants received case management for 6 months.

RESULTS

Nine patients were successfully recruited. The mean age was 58 years and mean duration of diabetes was 21 years. Successful collaboration between pharmacists and the health promoter required frequent communication and intense effort to address complex patient barriers. Health promoter contact time, in person, per participant ranged from 0 minutes to 640 minutes, and telephone call time ranged from 27 minutes to 111 minutes during the study period. Eight participants had medication adjustments during the study period, with a maximum of 7 adjustments per participant. Mean hemoglobin A1C declined from an average of 9.6% to 9.0%. Two patients are presented as case studies to describe how the pharmacist-health promoter team functioned. Information was obtained from health promoter records, survey results, and chart reviews.

CONCLUSIONS

The pharmacist and health promoter team management of uncontrolled diabetes among Latinos appears to be a feasible approach to improving medication management.

BMI measurement in schools

BACKGROUND AND OBJECTIVE

School-based BMI measurement has attracted attention across the nation as a potential approach to address obesity among youth. However, little is known about its impact or effectiveness in changing obesity rates or related physical activity and dietary behaviors that influence obesity. This article describes current BMI-measurement programs and practices, research, and expert recommendations and provides guidance on implementing such an approach.

METHODS

An extensive search for scientific articles, position statements, and current state legislation related to BMI-measurement programs was conducted. A literature and policy review was written and presented to a panel of experts. This panel, comprising experts in public health, education, school counseling, school medical care, and parenting, reviewed and provided expertise on this article.

RESULTS

School-based BMI-measurement programs are conducted for surveillance or screening purposes. Thirteen states are implementing school-based BMI-measurement programs as required by legislation. Few studies exist that assess the utility of these programs in preventing increases in obesity or the effects these programs may have on weight-related knowledge, attitudes, and behaviors of youth and their families. Typically, expert organizations support school-based BMI surveillance; however, controversy exists over screening. BMI screening does not currently meet all of the American Academy of Pediatrics' criteria for determining whether screening for specific health conditions should be implemented in schools.

CONCLUSION

Schools initiating BMI-measurement programs should adhere to safeguards to minimize potential harms and maximize benefits, establish a safe and supportive environment for students of all body sizes, and implement science-based strategies to promote physical activity and healthy eating.

Improving diabetes care and health measures among hispanics using community health workers: results from a randomized controlled trial

The increasing prevalence of diabetes and obesity, growing health disparities, and shortage of bilingual and culturally trained health care professionals underscore the role of trained community health workers (CHWs) to provide economically sustainable and culturally relevant services. This prospective randomized design evaluated the relative effectiveness of a CHW intervention among Hispanic persons with newly diagnosed type 2 diabetes, as compared with usual clinic practice in three inner-city health centers. In sum, 189 Hispanic patients newly diagnosed with type 2 diabetes were randomly assigned to one of three 6-month diabetes management approaches--CHW, case management, and standard provider care--and assessed for diabetes-related health measures and clinical indicators at baseline and postintervention. Participants in the CHW group achieved greater improvements than did the controls in program measures: health status, emergency department utilization, dietary habits, physical activity, and medication adherence. They also had 2.9 times greater odds of decreasing body mass index.

Implementing the community health worker model within diabetes management: challenges and lessons learned from programs across the United States

PURPOSE

The purpose of this qualitative study was to examine methods of implementation of the community health worker (CHW) model within diabetes programs, as well as related challenges and lessons learned.

METHODS

Semi-structured interviews were conducted with program managers. Four databases (PubMed, CINAHL, ISI Web of Knowledge, PsycInfo), the CDC's 1998 directory of CHW programs, and Google Search Engine were used to identify CHW programs. Criteria for inclusion were: DM program; used CHW strategy; occurred in United States. Two independent reviewers performed content analyses to identify major themes and findings. Sixteen programs were assessed, all but 3 focused on minority populations. Most CHWs were recruited informally; 6 programs required CHWs to have diabetes.

RESULTS

CHW roles and responsibilities varied across programs; educator was the most commonly identified role. Training also varied in terms of both content and intensity. All programs gave CHWs remuneration for their work. Common challenges included difficulties with CHW retention, intervention fidelity and issues related to sustainability. Cultural and gender issues also emerged. Examples of lessons learned included the need for community buy-in and the need to anticipate nondiabetes related issues.

CONCLUSIONS

Lessons learned from these programs may be useful to others as they apply the CHW model to diabetes management within their own communities. Further research is needed to elucidate the specific features of this model necessary to positively impact health outcomes.

Advancing diabetes self-management in the Mexican American population: a community health worker model in a primary care setting

PURPOSE

The purpose of this study was to pilot test the effectiveness of health promoters trained in the transtheoretical model of change to provide diabetes management education and support to Mexican Americans in a primary care setting.

METHODS

The study site was an urban community health center in Oakland, California. This study reports on 142 patients who were enrolled for at least 1 year in the program. Community health workers acted as extenders of the medical staff to facilitate behavior change, using patient-centered counseling. This was a 1-group pretest/posttest pilot study. Descriptive statistics and the paired-sample t test were used to compare the change in clinical outcome measures from baseline to 6 months and 1 year. Statistically significant changes were correlated with frequency of community health worker contact.

RESULTS

The paired-sample t test showed significant reduction in glycosylated hemoglobin (HbA1c) from baseline to 1 year (P < .004). Reductions were also seen in low-density lipoprotein cholesterol and blood pressure, but they were not statistically significant. When stratified by gender, women showed a greater reduction in HbA1c than men at 1 year. Patients with a higher frequency of community health worker contact showed a greater decline in HbA1c level.

CONCLUSIONS

The pilot study demonstrates that community health workers, as an integral part of the health care team, are effective agents in providing self-management support to persons with diabetes.

Children at risk of developing amblyopia: When to refer for an eye examination

Amblyopia is a sensory vision deficit that may be detected, diagnosed and treated best during the early stages of visual development. Only a small percentage of the paediatric population receive oculovisual examinations during this critical period of development even though such care is often free and easily accessible. Vision screening programs exist in certain states in the United States and in several European countries. Unfortunately, these programs are rarely implemented in Canada because of limited resources.Alternatively, screening at-risk infants may be more efficient and cost-effective in the early detection of amblyopia. Educating and training health care professionals, such as paediatricians, to recognize certain risk factors for amblyopia and encouraging early referral of the at-risk child to an eye care professional may prevent the development of amblyopia. The at-risk child has been defined to guide paediatricians and other primary health care professionals as to when to refer these children, the appropriate frequency of follow-up evaluations and the comanagement of compliance and treatment.