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 ...

PURPOSE We have investigated the association between respiratory symptoms and dust exposure among employees in 18 Norwegian smelters using a longitudinal design. METHODS All employees (N = 3,084) were examined annually for 5 years (12,996 health examinations). At each examination, the subjects reported if they had respiratory symptoms, coded as 1 (yes) or 0 (no), on a respiratory questionnair...

Objective This study aimed to compare the effects of two lifestyle intervention programs for type 2 diabetes mellitus (T2DM) prevention - traditional or interdisciplinary psychoeducation-based intervention - in daily habits and cardiometabolic risk factors and investigate the role of the psychoeducational approach for the retention of individuals in the program. Subjects and methods Between 2...

One of the most important issues that confront statisticians in longitudinal studies is dropouts. A variety of reasons may lead to withdrawal from a study and produce two different missingness mechanisms, namely, missing at random and non-ignorable dropouts. Nevertheless, none of these mechanisms is tenable in most studies. In addition, it may be that not all of dropouts are nonignorable. Many ...

MAIN RESULTS Thirty five published RCTs met criteria for inclusion in the review (24 trials comparing hypericum extracts with placebo, seven comparing hypericum extracts with older antidepressants, and six comparing hypericum with selective serotonin reuptake inhibitors (SSRIs)). Compared with placebo, hypericum resulted in similar numbers of dropouts due to adverse effects (24 RCTs, 8/1334 (0....

We present the results of colour selection of candidate high redshift galaxies in Hub-ble Deep Field South (HDF-S) using the Lyman dropout scheme. The HDF-S data we discuss were taken in a number of different filters extending from the near–UV (F300W) to the infrared (F222M) in two different fields. This allows us to select candidates with redshifts from z∼3 to z∼12. We find 15 candidate z∼3 ob...

BACKGROUND High attrition is a common problem for weight loss programs and directly affects program effectiveness. Since 2006, the Veterans Health Administration (VHA) has offered obesity treatment to its beneficiaries through the MOVE! Weight Management Program for Veterans (MOVE!). An early evaluation of this program showed that attrition rate was high. The present study examines how individu...