In longitudinal clinical trials, missing data are mostly related to dropouts. Some dropouts appear completely at random. The source for other dropouts is withdrawal from trials due to lack of efficacy. For the latter case, the analyses of the actual observed data and completers can produce bias. One of the approaches to comply with the intent-to-treat principle is the imputation of incomplete d...

The dropout problem has recently been the focus of considerable concern and the subject of much re search. Nevertheless, the lack of a careful and systematic assess ment of the consequences of dropping out still exists. The pur pose of the present study was to examine the personal, social, and economic consequences of dropping out of school. The High School and Beyond (HS&B) data base was used ...

We examined whether participants who failed to complete a simulated drive because of simulator sickness (dropouts) differed from those who completed the simulation (completers). Thirteen healthy older adult dropouts (mean age = 74.8 yr) and 12 comparable completers were compared on the following variables: on-road driving performance, the Useful Field of View test, the Attention Network Test, a...

This paper tests the extent to which the accumulation of basic cognitive skills, as measured by a post-schooling math test, matter for young dropouts entering today’s labor market. Based on a sample of dropouts who were age 16-18 when administered a math test in the late 1990s, estimates indicate that a standard deviation increase in the test score is associated with 6.5 percent higher average ...

Maps are used to track diseases and illustrate the social context of health problems. However, commercial mapping software requires special training. This article illustrates how nonspecialists used Google Earth, a free program, to create community maps. The Bronx, New York, is characterized by high levels of obesity and diabetes. Residents and medical students measured the variety and quality ...

Since the early 1970s, ballot initiatives and court rulings have sought to equalize funding across California schools. Yet 30 years later, variations in funding remain both across and within school districts. Moreover, although “funding per pupil” provides a readily available and understandable measure of school resources within a district, it provides little insight into how individual schools...

Are regulations on the payday loan effective? Do people switch to other forms of expensive credit such as pawnshop loans because of such regulations? In this study, we aim to find the answers to these two questions through exploring state-level variations in regulations on payday loans and other alternative financial services. Using FDIC’s panel survey data and Google Trends data, we find that ...