Purpose: The purpose of this study was to investigate the characteristics of missing physical activity (PA) data of children and youth. Method: PA data from the Chinese City Children and Youth Physical Activity Study ("N" = 2,758; 1,438 boys and 1,320 girls; aged 9-17 years old) were used for the study. After the data were sorted by the…

Background: In 2007 the Centers for Disease Control and Prevention (CDC) reported a higher prevalence of autism spectrum disorder (ASD) in New Jersey, one of the wealthiest states in the United States, than in other surveillance regions. Objective: To examine the association of socioeconomic status (SES) with ASD prevalence. Methods: Information…

This study examined data from the Special Education Elementary Longitudinal Study (SEELS, 2003) to compare the social skills of children in the U.S. with comorbid learning disabilities and attention-deficit/hyperactivity disorder (LD+AD/HD) to their peers with LD-only and AD/HD-only, and to assess how specific demographic factors moderate the…

The aim of this paper is to analyze the selection process at work before and after compulsory schooling by assessing the determinants of school failures, dropouts, and upper secondary school decisions of young Italians. The data-set is built combining individual data by the Labor Force Survey and aggregate data on local labor markets and school…

The National Survey of Children's Health (NSCH) provides a unique resource with which to analyze the health status, health care use, activities, and family and community environments experienced by children in rural and urban areas. The NSCH was designed to measure the health and well-being of children from birth through age 17 in the United…

This report offers the first systematic analysis of out-of-school youth populations. In so doing, it estimates the youth bulge worldwide and measures key characteristics of out-of-school youth for sub-Saharan African (SSA) countries. In addition, as examples of how existing data can be used for analysis at the national and subnational levels, the…

The article gives data on the age, sex, income, geographic region, and ethnic composition of the visually disabled population of the United States (taken from the National Center for Health Statistics records for 1977). (PHR)

Global economic transformations have never been as dramatic as in the twentieth century. Most countries have experienced radical changes in the standards of income per capita, technology, fertility, mortality, income inequality and the extent of democracy in the course of the past century. It is the goal of many disciplines--economics, history,…

This study was designed to measure adult performance as related to age. Using methodology derived from information theory, information processing ability was measured with the individuals performing as a communication system. Fifty-five school teachers, ranging in age from 20 to 66, served as subjects. In four groups, the subjects judged the sizes…

Total enrollment at Connecticut's 46 colleges and universities reached an all-time record of 170,624 in fall 2003. A November report titled, "Fall 2003 College and University Headcounts in Connecticut," analyzed headcount enrollment by status, level, institution and sector. This broader report discusses general trends in headcount…