Robert S. Kahn

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OBJECTIVE The purpose of this study was to examine the association of exposures to tobacco smoke and environmental lead with attention deficit hyperactivity disorder (ADHD). METHODS Data were obtained from the National Health and Nutrition Examination Survey 1999-2002. Prenatal and postnatal tobacco exposure was based on parent report; lead exposure was(More)
OBJECTIVE To determine the US national prevalence of attention-deficit/hyperactivity disorder (ADHD) and whether prevalence, recognition, and treatment vary by socioeconomic group. DESIGN Cross-sectional survey. SETTING Nationally representative sample of the US population from 2001 to 2004. PARTICIPANTS Eight- to 15-year-old children (N = 3082) in(More)
OBJECTIVE To determine patterns of comorbidity, functioning, and service use for US children with attention-deficit/hyperactivity disorder (ADHD). METHODS Bivariate and multivariable cross-sectional analyses were conducted on data from the 2007 National Survey of Children's Health on 61 779 children ages 6 to 17 years, including 5028 with ADHD. RESULTS(More)
OBJECTIVE To examine the joint effects of a dopamine transporter (DAT) polymorphism and maternal prenatal smoking on childhood hyperactivity-impulsivity and inattentiveness. STUDY DESIGN A cohort of 161 children was followed prospectively from age 6 months to 60 months. Primary outcomes were the DSM-IV hyperactive-impulsive and inattentive scales of the(More)
OBJECTIVE To examine the association of state income inequality and individual household income with the mental and physical health of women with young children. DESIGN Cross sectional study. Individual level data (outcomes, income, and other sociodemographic covariates) from a 1991 follow up survey of a birth cohort established in 1988. State level(More)
OBJECTIVE The study objective was to determine the independent and joint associations of prenatal tobacco and childhood lead exposures with attention-deficit/hyperactivity disorder (ADHD), as defined by current diagnostic criteria, in a national sample of US children. METHODS Data are from the 2001-2004 National Health and Nutrition Examination Survey, a(More)
OBJECTIVES This study examined the patterns and correlates of maternal smoking before, during, and after pregnancy. METHODS We examined socioeconomic, demographic, and clinical risk factors associated with maternal smoking in a nationally representative cohort of women (n = 8285) who were surveyed 17 +/- 5 months and again 35 +/- 5 months after delivery.(More)
OBJECTIVES Recognizing the negative effects of television on children, the American Academy of Pediatrics (AAP) recommends that children 2 years and older watch <2 hours of television per day and that children younger than 2 years watch no television. However, relatively little is known about the amount of television viewed by infants and toddlers. The(More)
CONTEXT Mental health disorders, substance use, and domestic violence often occur together. However, studies examining the impact of these conditions in mothers on the well-being of their children have focused only on isolated conditions. OBJECTIVE To examine the cumulative effect of maternal mental health disorders, substance use, and domestic violence(More)
OBJECTIVE Past studies of the prevalence of childhood asthma have yielded conflicting findings as to whether racial/ethnic disparities remain after other factors, such as income, are taken into account. The objective of this study was to examine the association of race/ethnicity and family income with the prevalence of childhood asthma and to assess whether(More)