BACKGROUND Undocumented immigrants are likely to be missing from population databases, making it impossible to identify an accurate sampling frame in migration research. No population-based data has been collected in Chile regarding the living conditions and health status of undocumented immigrants. However, the CASEN survey (Caracterizacion Socio- Economica Nacional) asked about migration stat...

OBJECTIVE This study investigates how the academic skills of children diagnosed with ADHD are perceived by teachers, parents, and the children themselves. METHOD The authors analyze data collected for third graders in spring 2002 in the nationally representative Early Childhood Longitudinal Survey. They use linear regressions to estimate independent associations between perceptions of academi...

BACKGROUND The impact of longitudinal psychiatric comorbidity, parenting and social characteristics on attention-deficit hyperactivity disorder (ADHD) medication use is still poorly understood. AIMS To assess the baseline and longitudinal influences of behavioural and environmental factors on ADHD medication use. METHOD Survival regressions with time-dependent covariates were used to model ...

We investigated the relation between dimensional aspects of inattention and hyperactivity-impulsivity in childhood and peer problems 4 years later, as well as the potential mediating effects of intellectual function. The sample included 127 children (32 with attention-deficit/hyperactivity disorder). Symptoms of inattention and hyperactivity-impulsivity were assessed via parent and teacher repo...

The prevalence of ADHD was studied among 200 UAE school-age children. Variables that distinguish ADHD and non-ADHD children were examined, including child characteristics, parents’ sociodemographics, socioeconomic status, family environment, and parental style of influence. Results indicated that 12.5 % of the children had ADHD symptomatology, and that the prevalence ratio varied across the thr...

OBJECTIVE We examined the association of neighborhood social and physical characteristics with ADHD, accounting for individual and family factors. METHOD The 2007 National Survey of Child Health, a nationally representative data set, was used (N = 64,076). Three neighborhood scales were generated: social support, amenities, and disorder. Logistic and ordinal logistic regressions were conducte...

OBJECTIVE This study examined the effects of childhood attention deficit hyperactivity disorder (ADHD) symptoms, both inattention and hyperactivity-impulsivity, on the development of smoking in male and female adolescents. METHOD Twin difference methods were used to control for shared genetic and environmental confounders in three population-based, same-sex twin samples (N=3,762; 64% monozygo...