Cardiometabolic risk factors in siblings from a statewide screening program.

BACKGROUND: The Coronary Artery Risk Detection in Appalachian Communities (CARDIAC) Project is a state-wide risk factor screening program that operated in West Virginia for 19 years and screened more than 100,000 5th graders for obesity, hypertension, and dyslipidemia. OBJECTIVES: We investigated siblings in the CARDIAC Project to assess whether cardiometabolic risk factors (CMRFs) correlate in siblings. METHODS: We identified 12,053 children from 5752 families with lipid panel, blood pressure, and anthropometric data. A linkage application (LinkPlus from the U.S. Centers for Disease Control and Prevention) matched siblings based on parent names, addresses, telephone numbers, and school to generate a linkage probability curve. Graphical and statistical analyses demonstrate the relationships between CMRFs in siblings. RESULTS: Siblings showed moderate intraclass correlation coefficient of 0.375 for low-density lipoprotein cholesterol (LDL-C), 0.34 for high-density lipoprotein cholesterol (HDL-C), and 0.22 for triglyceride levels. The body mass index (BMI) intraclass correlation coefficient (0.383) is slightly better (2%) than LDL-C or HDL-C, but the standardized beta values from linear regression suggest a 3-fold impact of sibling LDL-C over the child's own BMI. The odds ratio of a second sibling having LDL-C < 110 mg/dL with a first sibling at that level is 3.444:1 (Confidence Limit 3.031-3.915, P < .05). The odds ratio of a sibling showing an LDL-C ≥ 160 mg/dL, given a first sibling with that degree of elevated LDL-C is 29.6:1 (95% Confidence Limit: 15.54-56.36). The individual LDL-C level correlated more strongly with sibling LDL-C than with the individual's own BMI. Seventy-eight children with LDL-C > 160 mg/dL and negative family history would have been missed, which represents more than half of those with LDL-C > 160 mg/dL (78 vs 67 or 54%). CONCLUSIONS: Sibling HDL-C levels, LDL-C levels, and BMIs correlate within a family. Triglyceride and blood pressure levels are less well correlated. The identified CMRF relationships strengthen the main findings of the overall CARDIAC Project: an elevated BMI is not predictive of elevated LDL-C and family history of coronary artery disease poorly predicts cholesterol abnormality at screening. Family history does not adequately identify children who should be screened for cholesterol abnormality. Elevated LDL-C (>160 mg/dL) in a child strongly suggests that additional siblings and parents be screened if universal screening is not practiced.

Pediatric metabolic outcome comparisons based on a spectrum of obesity and asthmatic symptoms.

RATIONALE: Asthma and obesity are 2 of the most prevalent public health issues for children in the U.S. Trajectories of both have roughly paralleled one another over the past several decades causing many to explore their connection to one another and to other associated health issues such as diabetes and dyslipidemia. Earlier models have commonly designated obesity as the central hub of these associations; however, more recent models have argued connections between pediatric asthma and other obesity-related metabolic conditions regardless of children's obesity risk. OBJECTIVES: To examine the relationships between asthma, obesity, and abnormal metabolic indices. METHODS: We conducted a cross-sectional study of 179 children ages 7 to 12 years recruited from a rural, Appalachian region. Our model controlled for children's smoke exposure, body mass index percentile, and gender to examine the association between children's asthma (based on pulmonary function tests, medical history, medications, and parent report of severity), lipids (fasting lipid profile), and measures of altered glucose metabolism (glycosylated hemoglobin and homeostatic model assessment 2-insulin resistance). RESULTS: Our findings revealed a statistically significant model for low density lipids, high density lipids, log triglyceride, and homeostatic model assessment 2-insulin resistance; however, Asthma had a significant effect for the mean triglycerides. We also found an asthma-obesity interaction effect on children's glycosylated hemoglobin with asthmatic obese children revealing significantly higher glycosylated hemoglobin values than non-asthmatic obese children. CONCLUSIONS: Our findings support a connection between asthma and children's glycosylated hemoglobin values; however, this association remains entwined with obesity factors.

Clinical Genetic Testing for Familial Hypercholesterolemia: JACC Scientific Expert Panel.

Although awareness of familial hypercholesterolemia (FH) is increasing, this common, potentially fatal, treatable condition remains underdiagnosed. Despite FH being a genetic disorder, genetic testing is rarely used. The Familial Hypercholesterolemia Foundation convened an international expert panel to assess the utility of FH genetic testing. The rationale includes the following: 1) facilitation of definitive diagnosis; 2) pathogenic variants indicate higher cardiovascular risk, which indicates the potential need for more aggressive lipid lowering; 3) increase in initiation of and adherence to therapy; and 4) cascade testing of at-risk relatives. The Expert Consensus Panel recommends that FH genetic testing become the standard of care for patients with definite or probable FH, as well as for their at-risk relatives. Testing should include the genes encoding the low-density lipoprotein receptor (LDLR), apolipoprotein B (APOB), and proprotein convertase subtilisin/kexin 9 (PCSK9); other genes may also need to be considered for analysis based on patient phenotype. Expected outcomes include greater diagnoses, more effective cascade testing, initiation of therapies at earlier ages, and more accurate risk stratification.

LDL cholesterol level in fifth-grade schoolchildren associates with stature.

Short stature is associated with increased LDL-cholesterol levels and coronary artery disease in adults. We investigated the relationship of stature to LDL levels in children in the West Virginia Coronary Artery Risk Detection in Appalachian Communities (CARDIAC) Project to determine whether the genetically determined inverse relationship observed in adults would be evident in fifth graders. A cross-sectional survey of schoolchildren was assessed for cardiovascular risk factors. Data collected at school screenings over 18 years in WV schools were analyzed for 63,152 fifth-graders to determine relationship of LDL to stature with consideration of age, gender, and BMI. The first (shortest) quartile showed an LDL level of 93.6 mg/dl compared with an LDL level of 89.7 mg/dl for the fourth (tallest) quartile. Each incremental increase of 1 SD of height lowered LDL by 0.049 mg/dl (P < 0.0001). Multivariate analysis showed LDL to vary inversely as a function of the first (lowest) quartile of height after controlling for gender, median age, BMI percentile for age and gender, and year of screening. The odds ratio for LDL ≥ 130 mg/dl for shortest versus tallest quartile is 1.266 (95% CL 1.162-1.380). The odds ratio for LDL ≥ 160 mg/dl is 1.456 (95% CL 1.163-1.822). The relationship between short stature and LDL, noted in adults, is confirmed in childhood.

The Coronary Artery Risk Detection in Appalachian Communities (CARDIAC) Project: An 18 Year Review.

BACKGROUND: The Coronary Artery Risk Detection in Appalachian Communities (CARDIAC) Project is a chronic disease risk factor surveillance, intervention, and research initiative aimed at combating the unacceptably high prevalence of heart disease, diabetes, and other chronic illnesses in West Virginia. OBJECTIVES AND METHODS: The school-based public health project identifies health risk factors in children, educates families, informs primary care physicians, and provides resources to schools to help improve population health, beginning with children. RESULTS AND CONCLUSION: Details regarding methodology, results, and conclusions derived from this unique public health initiative that has screened over 200,000 children are the subject of this 18- year review.

Chronic disease risk screening: characteristics of parents who participate in screening with their children.

OBJECTIVE: To characterize adults who participate in a free health screening based on their children's participation in the same program and to identify factors that potentially contribute to their participation. METHODS: Child (n = 81,156) and parent (n = 5,257) results from a statewide, school-based project from 1998-2010 were assessed. Parent and child health outcomes including fasting lipids, and body composition were assessed using standardized procedures. RESULTS: Many mothers enrolled fathers into the program. These mothers had significantly higher total cholesterol and low-density lipoprotein levels than mothers who participated alone (p < .01). A greater proportion of parents participated in the program if their child had received an abnormal screening than their healthier counterparts (p < .001). CONCLUSIONS: Adult participation in preventive health screening is limited. Identifying successful ways to recruit adults for preventive health screening is necessary given the increased potential for these programs to identify risks and intervene early. Incorporating parent screening into an existing program for children may be a successful recruitment method, particularly for those who may be aware of a family vulnerability to chronic cardiovascular disease.

The relationship between children's physical activity and family income in rural settings: A cross-sectional study.

OBJECTIVE: To examine potential differences in children's physical activity and parent support of their children's physical activity based on family income within the rural setting. METHODS: A cross-sectional survey of 566 parents of children (5-15 years-old; mean = 7.7 years; standard deviation = 2.4) living in rural West Virginia from 2010 to 2011 was conducted. Children were recruited and had participated in a school-based health screening program. RESULTS: Overall, parents from a rural setting reported that their children engaged in an average of five days of physical activity for at least 60 min. Upon closer examination, children from lower-income families engaged in more physical activity, on average, than children from higher income families per parent report (mean = 6.6 days, confidence interval 95% = 4.9-6.0 vs. middle-income mean = 5.0, confidence interval 95% = 4.4-5.3 and highest-income mean = 4.5, confidence interval 95% = 4.1-4.7; p = .01). Rural parents supported their children's physical activity in numerous ways. Parents with the lowest incomes were more likely than parents from higher income families to encourage their children to be active and use their immediate environment for play and to be directly involved in physical activity with their children. More affluent parents were more likely to transport their children to other activity opportunities than parents from the lower income brackets. CONCLUSIONS: Lower income families may utilize their immediate environment and encourage activity among their children whereas more affluent families focus on organized opportunity more often than lower income families. These findings emphasize the need to conceptualize the role family income plays in physical activity patterns and the potential benefit it provides to some families.

Reducing the burden of disease and death from familial hypercholesterolemia: a call to action.

Familial hypercholesterolemia (FH) is a genetic disease characterized by substantial elevations of low-density lipoprotein cholesterol, unrelated to diet or lifestyle. Untreated FH patients have 20 times the risk of developing coronary artery disease, compared with the general population. Estimates indicate that as many as 1 in 500 people of all ethnicities and 1 in 250 people of Northern European descent may have FH; nevertheless, the condition remains largely undiagnosed. In the United States alone, perhaps as little as 1% of FH patients have been diagnosed. Consequently, there are potentially millions of children and adults worldwide who are unaware that they have a life-threatening condition. In countries like the Netherlands, the United Kingdom, and Spain, cascade screening programs have led to dramatic improvements in FH case identification. Given that there are currently no systematic approaches in the United States to identify FH patients or affected relatives, the patient-centric nonprofit FH Foundation convened a national FH Summit in 2013, where participants issued a "call to action" to health care providers, professional organizations, public health programs, patient advocacy groups, and FH experts, in order to bring greater attention to this potentially deadly, but (with proper diagnosis) eminently treatable, condition.

Association between birth characteristics and coronary disease risk factors among fifth graders.

OBJECTIVE: To evaluate the associations between selected birth characteristics-prematurity and poor intrauterine growth-and risk factors for coronary artery disease detected among children enrolled in the fifth grade. STUDY DESIGN: Children (n = 3054) with matched birth and fifth grade health screening data on body mass index (BMI), systolic blood pressure, and fasting lipid profiles were analyzed using MANOVA with the following independent variables of weight gain by the fifth grade: BMI percentile, normal or overweight/obese (BMI ≥ 85 th percentile), prematurity, and intrauterine growth (ie, small for gestational age [SGA], appropriate for gestational age [AGA], or large for gestational age [LGA]). RESULTS: LGA status at birth was associated with overweight/obesity later in life. In fifth grade, overweight/obese children had elevated systolic blood pressure and abnormal levels of most fasting serum lipids compared with normal-weight children regardless of birth characteristics. Beyond the effects of BMI percentile, preterm infants had higher levels of triglycerides (TG) than term infants by the fifth grade (P < .05). SGA infants who become overweight/obese had higher levels of TGs and very low-density lipoproteins compared with AGA and LGA infants, whether overweight or normal weight (P < .05). CONCLUSION: BMI ≥ 85 th percentile in the fifth grade is associated with abnormalities in most coronary artery risk factors regardless of birth characteristics. Beyond the effects of BMI percentile in the fifth grade, preterm infants had higher TG levels than term infants. SGA infants who were overweight/obese in the fifth grade had higher TG and very low-density lipoprotein levels compared with AGA and LGA infants who were overweight/obese or of normal weight in the fifth grade.

Individual-, family-, community-, and policy-level impact of a school-based cardiovascular risk detection screening program for children in underserved, rural areas: the CARDIAC Project.

The Coronary Artery Risk Detection In Appalachian Communities (CARDIAC) Project has screened more than 80,000 children (10-12 years) for cardiovascular and diabetes risk factors over the past 15 years. Simultaneous referral and intervention efforts have also contributed to the overall program impact. In this study, we examined evidence of programmatic impact in the past decade at the individual, family, community, and policy levels from child screening outcomes, referral rates, participation in subsequent services, and policies that embed the activities of the project as a significant element. Within this period of time, fifth-grade overweight and obesity rates were maintained at a time when rates elsewhere increased. 107 children were referred for additional screening and treatment for probable familial hypercholesterolemia (FH); 82 family members were subsequently screened in family-based screening efforts. 58 grants were distributed throughout the state for community-appropriate obesity intervention. A state wellness policy embedded CARDIAC as the method of assessment and national child cholesterol screening guidelines were impacted by CARDIAC findings. The sustainability and successful impact of this school-based program within a largely underserved, rural Appalachian state are also discussed.

Identifying the people and factors that influence children's intentions to make lifestyle changes.

Childhood obesity and health behavior programs are increasingly a focus within literature and individual provider practices. This study was designed to inform "best practices" for establishing effective programs in the medical setting by identifying persons and factors that influence children's willingness to be active, eat healthy, and lose weight when medically appropriate. A total of 342 child and parent dyads living in a rural setting participated in this study. Child and parent report of theory of planned behavior constructs and child intentions to lose weight, eat healthier, and increase own exercise was established as the study outcomes. Parent and child perceptions and child characteristics (e.g., weight status) were associated with children's intentions to lose weight and obtain more exercise whereas only child perceptions were associated with children's intentions to eat healthier. Incorporating children as young as 10 years of age in conversations and planning for diet and physical activity lifestyle changes is essential for the success of the treatment option.

Morbidly obese diagnosis as an indicator of cardiovascular disease risk in children: results from the CARDIAC Project.

OBJECTIVE: Obesity, an epidemic in children in the United States and abroad, is associated with risk factors for cardiovascular disease (CVD). Less is known about the consequences of morbid obesity in children. In the rural Appalachian population, obesity rates have reached such high proportions that it is difficult to target individual children. Consequently, there is a need to determine whether the morbid obesity category is useful for recommending comprehensive assessment and intervention for the highest risk children. Results from the Coronary Artery Risk Detection In Appalachian Communities (CARDIAC) program informed the use of the morbidly obese category of body mass index (BMI) as a surrogate measure of CVD risk. DESIGN: A total of 23 263 5th grade West Virginia students in the United States participated in a comprehensive risk factor screening between 2003 and 2008. METHODS: Screening included the calculation of BMI, resting blood pressure, presence of acanthosis nigricans, and fasting lipid profile (total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and triglycerides). RESULTS: Six percent of participants were morbidly obese (BMI >99%). The morbidly obese category provided additional risk factor information than that provided by typically given weight categories, in addition to being a highly specific indicator of additional CVD risk factors. CONCLUSION: These findings suggest that children diagnosed as morbidly obese have significantly greater chance of experiencing various CVD risk factors than those without morbid obesity diagnosis; these results suggest that the morbidly obese BMI category can be effectively used to target those children at greatest risk when resources are limited.

Metabolic abnormalities in children with asthma.

RATIONALE: Childhood asthma and obesity have reached epidemic proportions worldwide, and the latter is also contributing to increasing rates of related metabolic disorders, such as diabetes. Yet, the relationship between asthma, obesity, and abnormal lipid and glucose metabolism is not well understood, nor has it been adequately explored in children. OBJECTIVES: To analyze the relationship between asthma diagnosis and body mass in children across the entire range of weight percentile categories, and to test the hypothesis that early derangement in lipid and glucose metabolism is independently associated with increased risk for asthma. METHODS: Cross-sectional analysis of a representative sample of public school children from a statewide community-based screening program, including a total of 17,994 children, 4 to 12 years old, living in predominantly rural West Virginia, and enrolled in kindergarten, second, or fifth grade classrooms. MEASUREMENTS AND MAIN RESULTS: We analyzed demographics; family history; smoke exposure; parent-reported asthma diagnosis; body mass index; evidence of acanthosis nigricans as a marker for developing insulin resistance; and fasting serum lipid profile including total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and triglycerides. Regardless of their body mass index percentile, children diagnosed with asthma were more likely than children without asthma to have higher triglyceride levels and acanthosis nigricans after controlling for sex differences and smoke exposure. CONCLUSIONS: This study provides the first set of community-based data linking asthma, body mass, and metabolic variables in children. In particular, these findings uniquely describe a statistically significant association between asthma and abnormal lipid and glucose metabolism beyond body mass index associations.

Body mass index as a surrogate measure of cardiovascular risk factor clustering in fifth-grade children: results from the coronary artery risk detection in the Appalachian Communities Project.

BACKGROUND: Obesity, an increasing problem in children in the United States and abroad, has been associated with risk factors for cardiovascular disease (CVD). Consequently, there is a need to determine body mass index (BMI) cut-off values for recommending comprehensive assessment and intervention for high-risk children. The objective of this study was to use results from a large-scale cross-sectional screening project, the Coronary Artery Risk Detection in Appalachian Communities (CARDIAC), to derive BMI cut-off values that predict clustering of CVD risk factors. Design. 29 436 fifth grade West Virginia students in the United States participated in a comprehensive risk factor screening between 1997 and 2006. METHODS: Screening included the calculation of BMI, resting blood pressure, presence or absence of acanthosis nigricans, and a fasting lipid profile (total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and triglycerides). Factor analysis and receiver operating characteristic curves were used to examine BMI as a predictor for CVD risk factor clustering. RESULTS: BMI at the 95th percentile or higher were shown to be specific and sensitive predictors when three or more CVD risk factor clusters were present. CONCLUSION: These findings suggest that BMI, a cost-effective assessment tool, can be used to identify CVD risk-factor clustering at the 95th percentile.

Assessing BMI in West Virginia schools: parent perspectives and the influence of context.

West Virginia is a state at the forefront of the obesity epidemic and one that is experiencing immense health and economic costs as a result. The childhood obesity research discussed in this article was conducted over the past 10 years through 4 projects that range from a school-based cardiovascular risk screening program to an evaluation of state legislation targeting childhood obesity via modifications in the school environment. In the course of these projects, we have collected BMI and other health indices on students, provided feedback to students and their parents, and assessed the obesity and health-related beliefs of West Virginians through individual and focus-group interviews and questionnaires. Our work has been accomplished by using an active-consent process, and BMI has typically been only 1 component of the comprehensive health data we collect and feedback we provide. Collaboration with state and local partners and regular dissemination of our findings have been key elements of the approach taken. The research and policy implications of our findings and approach are discussed.

Using the theory of reasoned action to determine physicians' intention to measure body mass index in children and adolescents.

BACKGROUND: Over the past few decades, childhood obesity has become a major public health issue in the United States. Numerous public and professional organizations recommend that physicians periodically screen for obesity in children and adolescents using the body mass index (BMI). However, studies have shown that physicians infrequently measure BMI in children and adolescents. OBJECTIVES: The purpose of this study was to use the theory of reasoned action (TRA) to explain physicians' intentions to measure BMI in children and adolescents. The study objectives were to (1) determine if attitude and subjective norm predict physicians' intention to measure BMI in children and adolescents; (2) determine if family physicians and pediatricians differ in terms of theoretical factors; and (3) assess differences in behavioral beliefs, outcome evaluations, normative beliefs, and motivation to comply among physicians based on their level of intention to measure BMI. METHODS: A cross-sectional mailed survey of 2590 physicians (family physicians and pediatricians) practicing in 4 states was conducted. A self-administered questionnaire was designed that included items related to the TRA constructs. The association between the theoretical constructs was examined using correlation and regression analyses. Student's t test was used to determine differences between family physicians and pediatricians on theoretical constructs and to compare the underlying beliefs of nonintenders with intenders. RESULTS: The usable response rate was 22.8%. Less than half (44%) of the physicians strongly intended to measure BMI in children and adolescents. Together, the TRA constructs attitude and subjective norm explained up to 49.9% of the variance in intention. Pediatricians had a significantly (P<.01) higher intention to measure BMI as compared to family physicians. There were significant (P<.01) behavioral and normative belief differences between physicians who intend and those who do not intend to measure BMI. CONCLUSION: The TRA is a useful model in identifying the factors that are associated with physicians' intentions to measure BMI.

Metabolic syndrome in fifth grade children with acanthosis nigricans: results from the CARDIAC project.

BACKGROUND: A number of cardiovascular disease (CVD) risk factors have been linked to obesity and associated negative health outcomes in children. However, no consistent definition of metabolic syndrome exists for children. In addition, research is needed to systematically examine the prevalence of metabolic syndrome in high-risk children, including those with insulin resistance. This study explores several definitions of metabolic syndrome and determines the prevalence of metabolic syndrome in a large sample of children with acanthosis nigricans (AN). METHODS: The study used results from a large-scale screening of fifth-grade students in West Virginia to explore the prevalence of metabolic syndrome among 676 male and female participants who had mild to severe AN. RESULTS: In this high-risk sample of students who had AN, 49% met the criteria, i.e., three risk factors including insulin resistance, high body-mass index, and elevated blood pressure or dyslipidemia, when tested for metabolic syndrome. Children with AN who were classified as obese or morbidly obese were at significantly increased odds of having metabolic syndrome. CONCLUSIONS: Results are discussed in terms of systematically defining metabolic syndrome for high-risk children, as well as public health and clinical interventions targeting children who are overweight or obese. The presence of AN and morbid obesity might be easily observed markers for metabolic syndrome.

Promoting youth physical activity and healthy weight through schools.

The prevalence of overweight in youth has increased three- to four-fold in the United States since the 1960s. The school environment can play prominently in the mitigation of this epidemic by increasing physical activity opportunities/ levels, decreasing the availability of food/ beverage with added sugar, and enhancing students' scientific understandings about energy balance. The potential to increase energy expenditure goes beyond the school day to include safe routes for walking and biking to school (active transport) as well as the availability of school facilities as a community resource for physical activity outside of school hours. However, school consolidation and siting decisions have profound effects on active transport as well as the school as a community resource. Teachers and adolescents should not be overlooked as important partners in conceiving and carrying out programming that seeks to increase physical activity levels in youth and the broader community. As leaders and health care providers in their communities, physicians are postured to be effective advocates of, and to leverage in their own practice, school-based policies and practices towards promoting healthy weight in youth.

Comparisons of parent cardiovascular knowledge, attitudes, and behaviors based on screening and perceived child risks.

Questionnaire reports and universal screening procedures from 244 children (kindergarten, 5th grade, and 9th grade) were used to explore differences in parent health knowledge and attitudes of cardiovascular risks among children and parental involvement in promoting healthy lifestyles relative to whether their children were identified as being overweight or at risk of being overweight. The knowledge, attitudes, and behaviors of the parents of children who were identified as being at risk or overweight were further examined based on their perceptions of their children's level of risk. Parents' reports demonstrated significantly greater parent encouragement and knowledge of issues related to eating healthier foods and ways to cut calories among parents of children who were identified as being at risk or already overweight. A significant portion of parents underestimated their children's weight risks. Differences in parents' appraisals of their children's overweight risks were associated with differences in their knowledge, attitudes, and behaviors. These findings illustrate the need to address inaccuracies in parents' assessments of their children's overweight risks to improve parent investment and involvement in children's health modification programs.

The adult with congenital heart disease.

There are approximately 800,000 adult survivors of congenital heart disease in the U.S., and this number continues to increase on an annual basis. It was only 50 years ago that the first intracardiac repair of a congenital heart defect was performed. Survival into adulthood has only been realistic in the last three decades. This has created a new patient population with a number of challenges such as the impact of adult onset diseases on their underlying cardiac pathology, cognitive, physical, and psychosocial development, as well as issues related to reproduction, employment and health insurance. Possibly the most significant obstacle is identifying healthcare professionals who can provide long-term care. This manuscript reviews the challenges and recommendations for the care of these patients.