This study extends the literature on net marginal tax rates created by the Social Security program by including variations in both the probability of being eligible to receive benefits and earnings-related life expectancy. Previous literature has found that women incur a lower net marginal tax...

Using the Health and Retirement Survey from the USA, this paper finds a 16% selectivity-corrected wage penalty among women who engage in intermittent labour market activity. This penalty is experienced at a low level of intermittent activity, but appears to not play an important role in a...

Objective: To assess the predictive validity of the pneumonia severity-of-illness index (PSI), a mortality prediction rule, and extend the work of others by including data on outpatients treated for pneumonia. Methods: Prospective study of 675 consecutive patients with community-acquired...

This article examines the inflow and outflow of workers to different industries in Georgia during the information technology (IT) boom of the 1990s and the subsequent bust. Workers in the software and computer services industry were much more likely to have been absent from the Georgia workforce...

This paper applies a standard treatment effects model to determine that participation in Freshman Learning Communities improves academic performance and retention. Not controlling for individual self-selection into Freshman Learning Communities participation leads one to incorrectly conclude...