Maternal depressive symptoms and the risk of overweight in their children.

To examine the association between maternal depressive symptoms during early childhood of their offspring and later overweight in the children. Only children (n = 1,090) whose weights and heights were measured at least once for three time points (grades one, three and six) from the National Institute of Child Health and Human Development Study were included. Maternal depressive symptoms, defined as a Center for Epidemiologic Studies Depression Scale (CES-D) score of 16 or greater, were assessed using CES-D when the child was 1, 24, and 36 months. Childhood overweight was based on standardized height and weight measures taken during the interviews, and was defined according to appropriate CDC age- and sex-specific BMI percentiles. Generalized estimating equation was used to examine the impact of maternal depressive symptoms on the childhood overweight after adjusting for covariates. Compared to children of mothers without depression at any of the three time points, when children were one, 24 and 36 months of age, children of mothers with depression at all three time points were 1.695 times more likely to be overweight after adjusting for other child characteristics (95 % CI = 1.001-2.869). When further adjusted for maternal characteristics, children of mothers with depression at all three time points were 2.13 times more likely to be overweight (95 % CI = 1.05-4.31). Persistent maternal depressive symptoms may be associated with an increased risk of childhood overweight in their offspring. Children of mothers with depression may benefit from special attention in terms of obesity prevention.

Home food environment, dietary intake, and weight among overweight and obese children in Southern Appalachia.

OBJECTIVES: This study examined the relation of multiple aspects of the home food environment to dietary intake and body weight among overweight and obese children in southern Appalachia. METHODS: The study used baseline data from a cluster-randomized controlled trial, Parent-Led Activity and Nutrition for Healthy Living, evaluating a parent-mediated approach to treating child overweight and obesity in the primary care setting in southern Appalachia. Sixty-seven children ages 5 to 11 years were recruited from four primary care clinics. Multiple linear regression was used to estimate the relation between multiple aspects of the home food environment to dietary intake (fruit and vegetable intake, fat and sweets intake), and standardized body mass index (zBMI), adjusted for baseline family characteristics (education, smoking status during the past month, BMI) and child characteristics (sex, age, Medicaid/TennCare). RESULTS: Findings showed greater parental restriction and pressure in feeding were associated with greater fruit and vegetable intake in children (ß = 0.33, ß = 0.30, respectively; both P < 0.05). The availability of chips and sweets in a child's home and parental inappropriate modeling of eating were associated with an increased risk for consumption of fats and sweets by children (ß = 0.47, ß = 0.54, respectively; both P < 0.01). Parental monitoring of the child's eating was associated with a reduced risk for fat and sweets intake (ß = -0.24; P < 0.01). Finally, parental responsibility for feeding the child was associated with lower zBMI (ß = -0.20; P < 0.05). CONCLUSIONS: The home food environment, including food availability and parenting behaviors, was associated with overweight and obese children's dietary intake and weight. This study adds to evidence suggesting that programs aimed at improving overweight and obese children's eating patterns may target both aspects of the physical home environment and parental behaviors surrounding eating.

Joint effects of child temperament and maternal sensitivity on the development of childhood obesity.

The interplay between child characteristics and parenting is increasingly implicated as crucial to child health outcomes. This study assessed the joint effects of children's temperamental characteristics and maternal sensitivity on children's weight status. Data from the National Institute of Child Health and Human Development's Study of Early Child Care and Youth Development were utilized. Infant temperament, assessed at child's age of 6 months by maternal report, was categorized into three types: easy, average, and difficult. Maternal sensitivity, assessed at child's age of 6 months by observing maternal behaviors during mother-child semi-structured interaction, was categorized into two groups: sensitive and insensitive. Children's height and weight were measured longitudinally from age 2 years to Grade 6, and body mass index (BMI) was calculated. BMI percentile was obtained based on the Centers for Disease Control and Prevention's BMI charts. Children, who had a BMI ≥ the 85th percentile, were defined as overweight-or-obese. Generalized estimating equations were used to analyze the data. The proportions of children overweight-or-obese increased with age, 15.58% at 2 years old to 34.34% by Grade 6. The joint effects of children's temperament and maternal sensitivity on a child's body mass status depended on the child's age. For instance, children with difficult temperament and insensitive mothers had significantly higher risks for being overweight-or-obese during the school age phase but not during early childhood. Specific combinations of child temperament and maternal sensitivity were associated with the development of obesity during childhood. Findings may hold implications for childhood obesity prevention/intervention programs targeting parents.

Primary care practice addressing child overweight and obesity: a survey of primary care physicians at four clinics in southern Appalachia.

OBJECTIVE: The prevalence of childhood overweight and obesity in southern Appalachia is among the highest in the United States (US). Primary care providers are in a unique position to address the problem; however, little is known about attitudes and practices in these settings. METHODS: A 61-item healthcare provider questionnaire assessing current practices, attitudes, perceived barriers, and skill levels in managing childhood overweight and obesity was distributed to physicians in four primary care clinics. Questionnaires were obtained from 36 physicians. RESULTS: Physicians' practices to address childhood overweight and obesity were limited, despite the fact that most physicians shared the attitude that childhood overweight and obesity need attention. While 71% of physicians reported talking about eating and physical activity habits with parents of overweight or obese children, only 19% reported giving these parents the tools they needed to make changes. Approximately 42% determined the parents' readiness to make small changes for their overweight or obese children. Physicians' self-perceived skill level in managing childhood overweight and obesity was found to be a key factor for childhood overweight- and obesity- related practices. CONCLUSION: Primary care physicians in southern Appalachia currently play a limited role in the prevention or intervention of childhood overweight and obesity. Training physicians to improve their skills in managing childhood overweight and obesity may lead to an improvement in practice.

Examination of the relationships between environmental exposures to volatile organic compounds and biochemical liver tests: application of canonical correlation analysis.

This study was to explore the relationships between personal exposure to 10 volatile organic compounds (VOCs) and biochemical liver tests with the application of canonical correlation analysis. Data from a subsample of the 1999-2000 National Health and Nutrition Examination Survey were used. Serum albumin, total bilirubin (TB), alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), alkaline phosphatase (ALP), and gamma-glutamyl transferase (GGT) served as the outcome variables. Personal exposures to benzene, chloroform, ethylbenzene, tetrachloroethene, toluene, trichloroethene, o-xylene, m-,p-xylene, 1,4-dichlorobenzene, and methyl tert-butyl ether (MTBE) were assessed through the use of passive exposure monitors worn by study participants. The first two canonical correlations were 0.3218 and 0.2575, suggesting a positive correlation mainly between the six VOCs (benzene, ethylbenzene, toluene, o-xylene, m-,p-xylene, and MTBE) and the three biochemical liver tests (albumin, ALP, and GGT) and a positive correlation mainly between the two VOCs (1,4-dichlorobenzene and tetrachloroethene) and the two biochemical liver tests (LDH and TB). Subsequent multiple linear regressions show that exposure to benzene, toluene, or MTBE was associated with serum albumin, while exposure to tetrachloroethene was associated with LDH and total bilirubin. In conclusion, exposure to certain VOCs as a group or individually may influence certain biochemical liver test results in the general population.

Intention for healthy eating among southern Appalachian teens.

OBJECTIVE: To describe the intention for healthy eating and its correlates among southern Appalachian teens. METHODS: Four hundred sixteen adolescents 14- to 16-years-old were surveyed with self-administered questionnaires. RESULTS: About 30% of the adolescents surveyed had definite intentions to eat healthfully during the next 2 weeks. The scales for perceived behavior control, attitude, perceived eating habits of significant others, and social support were shown to be fairly reliable (Cronbach's alpha=0.60 to 0.88). Perceived behavior control and attitude were positively associated with the intention for healthy eating. CONCLUSIONS: Better behavior control and more positive attitude may lead to a stronger intention for healthy eating.

Subclinical thyroid disorders and cognitive performance among adolescents in the United States.

BACKGROUND: Thyroid hormone plays a crucial role in the growth and function of the central nervous system. The purpose of the study was to examine the relationships between the status of subclinical thyroid conditions and cognition among adolescents in the United States. METHODS: Study sample included 1,327 adolescents 13 to 16 years old who participated in the Third National Health and Nutrition Examination Survey (NHANES III). Serum thyroxine (T4) and thyroid stimulating hormone (TSH) were measured and subclinical hypothyroidism, subclinical hyperthyroidism, and euthyroid groups were defined. Cognitive performance was assessed using the subscales of the Wide Range Achievement Test-Revised (WRAT-R) and the Wechsler Intelligence Scale for Children-Revised (WISC-R). The age-corrected scaled scores for arithmetic, reading, block design, and digit span were derived from the cognitive assessments. RESULTS: Subclinical hypothyroidism was found in 1.7% and subclinical hyperthyroidism was found in 2.3% of the adolescents. Cognitive assessment scores on average tended to be lower in adolescents with subclinical hyperthyroidism and higher in those with subclinical hypothyroidism than the score for the euthyroid group. Adolescents with subclinical hypothyroidism had significantly better scores in block design and reading than the euthyroid subjects even after adjustment for a number of variables including sex, age, and family income level. CONCLUSION: Subclinical hypothyroidism was associated with better performance in some areas of cognitive functions while subclinical hyperthyroidism could be a potential risk factor.

College students as facilitators in reducing adolescent obesity disparity in Southern Appalachia: Team Up for Healthy Living.

The proportion of obese adolescents in Southern Appalachia is among the highest in the nation. Through funding from the National Institute on Minority Health and Health Disparities--National Institutes of Health, the Team Up for Healthy Living project was a cluster-randomized trial targeting obesity prevention in adolescents through a cross-peer intervention. The specific aims of the project were to: 1) develop a peer-based health education program focusing on establishing positive peer norms towards healthy eating and physical activity (PA) among high school students, 2) test program efficacy, and 3) explore mechanisms underlying the program. The study was guided by the Theory of Planned Behavior, which presupposes that human behavior is primarily driven by attitude, subjective norms, perceived behavioral control, and social support. To deliver the intervention, undergraduate students from the disciplines of public health, nutrition, and kinesiology were hired as peer facilitators. Ten area high schools were invited to participate, were matched on demographics and then randomized to intervention or control. The primary outcomes of the study included body mass status, dietary behaviors, PA, and sedentary behaviors which were assessed at baseline and at three and twelve months post baseline. Intervention schools received Team Up for Healthy Living curriculum, which consists of eight 40-minute sessions. The curriculum focused on improving nutrition awareness, PA, leadership and communication. Control schools received their regularly scheduled Lifetime Wellness curriculum. The long-term goal of the study was to establish an effective academia-community partnership program to address adolescent obesity disparity in Southern Appalachia.

Serum iron, copper and zinc concentrations and risk of cancer mortality in US adults.

PURPOSE: To examine the prospective association of serum iron, copper, and zinc with cancer mortality. METHODS: The study sample included 3000 men and 3244 women free from cancer at baseline who participated in the Second National Health and Nutrition Examination Survey. Vital status at follow-up was identified by the Social Security Administration's death file and the National Death Index. Iron, transferrin saturation (TS), copper, and zinc were categorized into 4 levels using the 10th, 50th, and 90th percentiles for cutoffs. Relative risks (RRs) were derived from the proportional hazard models after adjustment for a number of potential confounders. RESULTS: Three hundred seven cancer deaths (ICD-9 140-195, 199-208) were identified during 83,664.4 person-years of follow-up. Cancer mortality per 1000 person-years was 3.7 (4.7 for men and 2.8 for women). For men and women combined, the adjusted RRs (95% confidence intervals, CI) for the four levels were 0.96 (0.57-1.61), 1.00 (reference), 1.12 (0.80-1.58), 1.86 (1.07-3.22) for iron; 0.97 (0.56-1.70), 1.00 (reference), 1.36 (0.99-1.87), 1.82 (1.10-3.02) for TS; 0.76 (0.44-1.31), 1.00 (reference), 1.10 (0.77-1.58), 1.89 (1.07-3.32) for copper; and 0.75 (0.50-1.13), 1.00 (reference), 0.64 (0.47-0.88), 0.84 (0.53-1.33) for zinc. When the exposures were analyzed as continuous variables, the adjusted RRs (CI) were 1.66 (1.03-2.68) for 100 microg/dl iron increase, 1.17 (1.01-1.36) for 10% TS increase, 1.98 (1.12-3.50) for 100 microg/dl copper increase, and 0.57 (0.16-1.96) for 100 microg/dl zinc increase. Sex differences in the adjusted RRs for iron, TS, and copper were suggestive. CONCLUSION: People with higher serum iron, TS, or copper concentrations had an increased risk of dying from cancer.

Blood lead levels and sexual maturation in U.S. girls: the Third National Health and Nutrition Examination Survey, 1988-1994.

Using data from the Third National Health and Nutrition Examination Survey, we assessed measures of puberty in U.S. girls in relation to blood lead levels to determine whether sexual maturation may be affected by current environmental lead exposure. The study sample included 1,706 girls 8-16 years old with pubic hair and breast development information; 1,235 girls 10-16 years old supplied information on menarche. Blood lead concentrations (range = 0.7-21.7 micro g/dL) were categorized into three levels: 0.7-2.0, 2.1-4.9, and 5.0-21.7 micro g/dL. Sexual maturation markers included self-reported attainment of menarche and physician determined Tanner stage 2 pubic hair and breast development. Girls who had not reached menarche or stage 2 pubic hair had higher blood lead levels than did girls who had. For example, among girls in the three levels of blood lead described above, the unweighted percentages of 10-year-olds who had attained Tanner stage 2 pubic hair were 60.0, 51.2, and 44.4%, respectively, and for girls 12 years old who reported reaching menarche, the values were 68.0, 44.3, and 38.5%, respectively. The negative relation of blood lead levels with attainment of menarche or stage 2 pubic hair remained significant in logistic regression even after adjustment for race/ethnicity, age, family size, residence in metropolitan area, poverty income ratio, and body mass index. In conclusion, higher blood lead levels were significantly associated with delayed attainment of menarche and pubic hair among U.S. girls, but not with breast development.

Parent report of child's health-related quality of life after a primary-care-based weight management program.

BACKGROUND: Health-related quality of life (HRQoL) has been recognized as an important target and health outcome in obesity research. The current study aimed to examine HRQoL in overweight or obese children after a 10-week primary-care-based weight management program, Parent-Led Activity and Nutrition for Healthy Living, in southern Appalachia. METHODS: Sixty-seven children (ages 5-12 years) and their caregivers were recruited from four primary care clinics, two of which were randomized to receive the intervention. Caregivers in the intervention groups received two brief motivational interviewing visits and four group sessions led by providers as well as four phone follow-ups with research staff. Caregivers completed the PedsQL and demographic questionnaires at baseline and at 3, 6, and 12 months postintervention. Child height and weight were collected to determine standardized BMI. RESULTS: Caregivers of children receiving the weight control intervention reported no statistically significant improvements in child total HRQoL, as compared to the control group, across the course of treatment (ß=0.178; 95% confidence interval, -0.681, 1.037; p=0.687). Additionally, no statistically significant improvements were found across other HRQoL domains. CONCLUSIONS: Future studies examining HRQoL outcomes in primary care may consider treatment dose as well as methodological factors, such as utilization of multiple informants and different measures, when designing studies and interpreting outcomes.

Pesticide exposure during pregnancy and low birth weight.

BACKGROUND: Limited epidemiologic studies have investigated the effects of pesticide exposure during pregnancy on low birth weight in offspring in rural China. METHODS: A survey of a total of 503 women was conducted in Ling county of Shandong Province of China following delivery from 1 November 2009 to 8 February 2010. RESULTS: After adjustment for confounding and compared with no pesticide exposure, multiple logistic regression showed a non-significant increased likelihood of low birth weight for both children of mothers exposed to pesticides when not pregnant (OR = 1.80, 95% CI: 0.62, 5.22) and mothers exposed to pesticides during pregnancy (OR = 2.42, 95% CI: 0.73, 8.08); multiple linear regression showed a non-significant reduced birth weight for both children of mothers exposed to pesticides when not pregnant (ß=-0.59, p=0.28) and mothers exposed to pesticides during pregnancy (ß=-0.89, p=0.15). CONCLUSIONS: Exposure to pesticides during pregnancy was associated with a non-significant increase in low birth weight in this rural Chinese population. Future studies using larger sample sizes and longer follow-up periods are warranted.

Prevalence and risk factors of maternal depression during the first three years of child rearing.

BACKGROUND: This longitudinal study examined maternal depression status from birth of a child to 36 months of age using data from the National Institute of Child Health and Human Development (NICHD) Study of Early Child Care and Youth Development. METHODS: Maternal depression was assessed using the Center of Epidemiological Studies Depression Scale (CES-D) and defined as a score of ≥16. For this study, early onset depression was defined as depression within the 6 months after birth, and late onset depression was depression onset when the child was ≥24 months old. Chronic depression was defined as depression that started within 6 months after birth and lasted until 24 months of age or longer. RESULTS: The prevalence of maternal depression was 32.2% for early onset, 7.4% for late onset, and 13.4% for chronic depression. The prevalence of maternal depression was highest at 1 month, decreased at 6 months, and then remained fairly stable until 36 months. Mothers 18-24 years of age, of black race, unemployed, with lower social support, single, or with poor general health had a higher prevalence of both early and chronic depression compared to other groups. CONCLUSIONS: Younger maternal age, poverty, lower education, and lack of social support were all significantly associated with increased maternal depression in multivariate regression models. Younger age, black race, unemployment, single status, lack of social support, and poor general health were all risk factors for increased prevalence of maternal depression.

Association of ADAM10 and CAMK2A polymorphisms with conduct disorder: evidence from family-based studies.

Twin and family studies have shown that genetic factors play a role in the development of conduct disorder (CD). The purpose of this study was to identify genetic variants associated with CD using a family-based association study. We used 4,720 single nucleotide polymorphisms (SNPs) from the Illumina Panel and 11,120 SNPs from the Affymetrix 10K GeneChips genotyped in 155 Caucasian nuclear families from Genetic Analysis Workshop (GAW) 14, a subset from the Collaborative Study on the Genetics of Alcoholism (COGA). 20 SNPs had suggestive associations with CD (p<10(-3)), nine of which were located in known genes, including ADAM10 (rs383902, p=0.00036) and CAMK2A (rs2053053, p=0.00098). Our results were verified using the International Multi-Center ADHD Genetics Project (IMAGE) dataset. In conclusion, we identified several loci associated with CD. Especially, the two genes (ADAM10 and CAMK2A) have been reported to be associated with Alzheimer's disease, bipolar disorder and depression. These findings may serve as a resource for replication in other populations.

Parent-Led Activity and Nutrition (PLAN) for healthy living: design and methods.

Child obesity has become an important public health concern, especially in rural areas. Primary care providers are well positioned to intervene with children and their parents, but encounter many barriers to addressing child overweight and obesity. This paper describes the design and methods of a cluster-randomized controlled trial to evaluate a parent-mediated approach utilizing physician's brief motivational interviewing and parent group sessions to treat child (ages 5-11 years) overweight and obesity in the primary care setting in Southern Appalachia. Specific aims of this pilot project will be 1) to establish a primary care based and parent-mediated childhood overweight intervention program in the primary care setting, 2) to explore the efficacy of this intervention in promoting healthier weight status and health behaviors of children, and 3) to examine the acceptability and feasibility of the approach among parents and primary care providers. If proven to be effective, this approach may be an exportable model to other primary care practices.

Nurses' attitudes, beliefs and confidence levels regarding care for those who abuse alcohol: impact of educational intervention.

Alcohol abuse is a worldwide public health concern. Nurses, representing the largest body of health care providers, are a potential resource to provide screening and brief intervention for patients with alcohol problems. This study evaluates the effect of an educational intervention on the attitudes, beliefs, and confidence levels of nurses regarding screening and brief intervention for alcohol problems. One hundred eighty-one students at Vanderbilt University School of Nursing participated in a four-hour educational intervention to train providers in brief negotiated intervention (BNI) for screening, early detection and brief treatment of alcohol problems. Participants completed questionnaires before and after this training. Analysis of the data using paired t-test and one-way analysis of variance showed statistically significant positive change in the nurses' attitudes, beliefs, and confidence levels regarding alcohol abuse and its treatment after the educational intervention. For example, the percentage of nurses who reported always having confidence in assessing patients' readiness to change their behavior increased from 8.3% to 23.5% after training. In conclusion, the BNI educational intervention can be effective in promoting positive changes among nurses in attitudes, beliefs, and confidence levels regarding alcohol abuse and its treatment.

Child overweight interventions in rural primary care practice: a survey of primary care providers in southern Appalachia.

Child overweight has reached an epidemic level throughout the United States. A total of 65 primary care providers in southern Appalachia were surveyed to understand current issues in addressing child overweight in rural primary care practice. The study shows that while providers realized the importance of child overweight intervention, many were not ready and did little to address child overweight in their practices. The providers' skill levels in addressing child overweight were generally less than sufficient. Common barriers to child overweight treatment included lack of parental motivation and involvement, lack of supportive services, and lack of clinician time. In conclusion, rural primary care is facing many challenges in addressing child overweight. However, with more training in behavioral intervention skills and through establishing a family-based intervention and a group visit approach, primary care providers could play a more active role in the fight against the epidemic of child overweight.

Eating habits among adolescents in rural Southern Appalachia.

A survey of 274 adolescents aged 14-16 years in rural Appalachia showed that unhealthy eating habits were prevalent. A few adolescents were teased about weight whereas 20.1% witnessed weight teasing almost everyday. Perception of parents' healthy eating and better social support for healthy eating were associated with healthier eating habits.

Blood concentrations of selected volatile organic compounds and neurobehavioral performance in a population-based sample.

The authors analyzed data from a national sample to examine the relationships between blood concentrations of selected volatile organic compounds (VOCs) and the assessment scores of neurobehavioral evaluation tests. They calculated summary statistics to describe blood concentrations of 30 VOCs. For instance, the 95th percentiles were as follows: 1,1,1-trichloroethane, 0.799 microg/l; 1,4-dichlorobenzene, 11.081 microg/l; benzene, 0.476 microg/l; and toluene, 0.281 microg/l. For 1,4-dichlorobenzene, benzene, dibromochloromethane, and trichloroethene, a blood level higher than the 95th percentile was associated with a poorer neurobehavioral assessment score than was a blood level up to the 95th percentile. The authors found a linear relationship between blood toluene concentration and the Serial Digit Learning Test score. The findings suggest that exposure to certain VOCs may result in poor neurobehavioral performance. The study was exploratory and precludes a conclusive statement, so further investigation is warranted.

Ethnic differences in the presence of secondary sex characteristics and menarche among US girls: the Third National Health and Nutrition Examination Survey, 1988-1994.

OBJECTIVE: To assess measures of puberty-presence of pubic hair, breast development, and menarche-for 3 racial/ethnic groups of girls in the United States. METHODS: Using data from the Third National Health and Nutrition Examination Survey, this study sample was restricted to 1623 girls aged 8 to 16 years (466 non-Hispanic white, 589 non-Hispanic black, and 568 Mexican American) for whom information was available on Tanner stages of pubic hair and breast development. Subsequently, the sample was restricted to 1168 girls aged 10 to 16 years (330 non-Hispanic white, 419 non-Hispanic black, and 419 Mexican American) for whom menarche data were available. Tanner stage II or higher was used to define pubic hair and breast development; menarche status was self-reported. The percentage of girls who had pubic hair and breast development and had achieved menarche was computed by age and race/ethnicity. Probit and failure time models were applied to estimate mean ages at onset of pubic hair, breast development, and menarche. The racial/ethnic differences also were examined after adjustment for social and economic variables and current body mass index. RESULTS: Black and Mexican American girls had pubic hair and breast development and had achieved menarche at younger ages than white girls. For example, 49.4% of black girls aged 9 years had breast development compared with 24.5% of Mexican American girls and 15.8% of white girls. The mean age at onset of pubic hair, breast development, and menarche was 9.5, 9.5, and 12.1 year for black girls; 10.3, 9.8, and 12.2 years for Mexican American girls; and 10.5, 10.3, and 12.7 years for white girls. These ethnic differences remained even after adjustment for current body mass index and several social and economic variables. CONCLUSION: Black girls on average enter puberty first, followed by Mexican American and then white girls.