Healthy people 2010 leading health indicators: how children with special health care needs fared.

OBJECTIVES: We compared estimates for children with and without special health care needs (SHCN) at 2 time periods for national health objectives related to the Healthy People 2010 leading health indicators (LHIs). METHODS: Data were from the 2003 and 2007 National Surveys of Children's Health. Seven survey items were relevant to the LHIs and available in both survey years: physical activity, obesity, household tobacco use, current insurance, personal health care provider, past-month depressive symptoms, and past-year emergency department visits. RESULTS: In 2003 and 2007, children with SHCN fared worse than those without SHCN with respect to physical activity, obesity, household tobacco exposure, depressive symptomology, and emergency department visits, but fared better on current insurance and having a personal health care provider. Physical activity and access to a personal health care provider increased for all children, whereas the absolute disparity in personal provider access decreased 4.9%. CONCLUSIONS: Significant disparities exist for key population health indicators between children with and without SHCN. Analyses illustrated how population-based initiatives could be used to frame health challenges among vulnerable populations.

Prepregnancy body mass index and gestational weight gain in relation to child body mass index among siblings.

There is increasing evidence that in utero effects of excessive gestational weight gain may result in increased weight in children; however, studies have not controlled for shared genetic or environmental factors between mothers and children. Using 2,758 family groups from the Collaborative Perinatal Project, the authors examined the association of maternal prepregnancy body mass index (BMI) and gestational weight gain on child BMI at age 4 years using both conventional generalized estimating equations and fixed-effects models that account for shared familial factors. With generalized estimating equations, prepregnancy BMI and gestational weight gain had similar associations with the child BMI z score (ß = 0.09 units, 95% confidence interval (CI): 0.08, 0.11; and ß = 0.07 units, 95% CI: 0.04, 0.11, respectively. However, fixed effects resulted in null associations for both prepregnancy BMI (ß = 0.03 units, 95% CI: -0.01, 0.07) and gestational weight gain (ß = 0.03 units, 95% CI: -0.02, 0.08) with child BMI z score at age 4 years. The positive association between gestational weight gain and child BMI at age 4 years may be explained by shared family characteristics (e.g., genetic, behavioral, and environmental factors) rather than in utero programming. Future studies should continue to evaluate the relative roles of important familial and environmental factors that may influence BMI and obesity in children.

Decline in the United States black preterm/low birth weight rate in the 1990s: can the economic boom explain it?

PURPOSE: Macroeconomic improvements have been posited as an explanation of the decline in the Black preterm birth rate during the 1990s. This study assessed whether decreasing unemployment explained the decline in preterm, low birth weight births (PT-LBW) for Black women. METHODS: United States singleton births to non-Hispanic Black women ages 18 and over, conceived between 1990 and 2001, were pooled to examine PT-LBW trends by level of social advantage (approximated by education and marital status). The impact of the state-level unemployment rate in the first and second trimester of pregnancy was evaluated in multiple logistic regression models. RESULTS: During the 1990s, PT-LBW declined 11% among disadvantaged (unmarried, less than high school educated) Black women. Although the unemployment rate and PT-LBW were positively related, decreases in unemployment did not explain the decline in PT-LBW. Instead, improvements in prenatal care utilization and smoking behavior largely accounted for the temporal trend. CONCLUSIONS: Macroeconomic improvements, measured by unemployment, only marginally contributed to the Black PT-LBW trend in the 1990s. To effect further reductions, future studies should investigate other possible determinants of the proximate behavioral changes that did explain the trend (e.g., Earned Income Tax Credit expansions, increased, cigarette taxes/smoking legislation).

Illicit drug use and adverse birth outcomes: is it drugs or context?

Prenatal drug use is commonly associated with adverse birth outcomes, yet no studies have controlled for a comprehensive set of associated social, psychosocial, behavioral, and biomedical risk factors. We examined the degree to which adverse birth outcomes associated with drug use are due to the drugs versus surrounding factors. Data are from a clinical sample of low-income women who delivered at Johns Hopkins Hospital between 1995 and 1996 (n = 808). Use of marijuana, cocaine, and opiates was determined by self-report, medical record, and urine toxicology screens at delivery. Information on various social, psychosocial, behavioral, and biomedical risk factors was gathered from a postpartum interview or the medical record. Multivariable regression models of birth outcomes (continuous birth weight and low birth weight ([LBW] < 2,500 g)) were used to assess the effect of drug use independent of associated factors. In unadjusted results, all types of drug use were related to birth weight decrements and increased odds of LBW. However, only the effect of cocaine on continuous birth weight remained significant after adjusting for all associated factors (-142 g, p = 0.05). No drug was significantly related to LBW in fully adjusted models. About 70% of the unadjusted effect of cocaine use on continuous birth weight was explained by surrounding psychosocial and behavioral factors, particularly smoking and stress. Most of the unadjusted effects of opiate use were explained by smoking and lack of early prenatal care. Thus, prevention efforts that aim to improve newborn health must also address the surrounding context in which drug use frequently occurs.

Illicit drug use and neonatal outcomes: a critical review.

Although the neonatal consequences of tobacco and alcohol exposure are well established, the evidence related to prenatal illicit drug use is less consistent despite prevalent views to the contrary. The many social, psychosocial, behavioral, and biomedical risk factors for adverse birth outcomes associated with illicit drug use complicate the evaluation of neonatal effects. Placing emphasis on recent research, this review summarizes the epidemiologic literature on the neonatal impact of marijuana, opiate, and cocaine use. Of these drugs, cocaine use is most consistently related to fetal growth decrements and dose-response effects have been observed. However, studies to date have largely failed to control for associated social, psychosocial, and contextual factors. Additional recommendations for future research are provided. It is likely that interventions will need to address the factors surrounding drug use to greatly improve neonatal outcomes (e.g., social circumstances, poor nutrition, stress, infections).

The role of federally funded health centers in serving the rural population.

CONTEXT: Federally funded health centers attempt to improve rural health by reducing and eliminating access barriers to primary care services. PURPOSE: This study compares rural health center patients with people in the general rural population for indicators of access to preventive services and health outcomes. METHODS: Data from the annual reporting system for federally funded health centers, the 1999 Uniform Data System, and published national census data were used to provide sociodemographic comparisons. Selected health status indicators, preventive services utilization, and health outcomes were obtained from a survey of health center patients, and the results were compared with the National Health Interview Survey and National Vital Statistics. FINDINGS: Unlike the nation's rural population, the majority of rural health center patients are of minority race/ethnicity, live at or below poverty, and are either uninsured or on Medicaid. Despite having higher prevalence of traditional access barriers than the general rural population, rural health center patients are significantly more likely to receive certain preventive services and also to experience lower rates of low birthweight, particularly for African American infants. However, rural health center patients are not more likely to have received influenza vaccination or up-to-date mammogram screening. CONCLUSIONS: Health centers provide access to essential preventive care for many of the most vulnerable rural residents. A national strategy to expand the rural health center network will likely help to ensure improved health for the considerable proportion of rural residents who still lack access to appropriate services.