To examine the hypothesis that the increased risk of suicide for the widowed elderly is dependent of sex, suicide mortality in a cohort of 6266 white married and 3486 white widowed persons aged 60 yr or older in 1963 was evaluated based on a 12-yr follow-up survey in Washington County, MD. Death...

Injury is recognized as an increasing public health problem in developing countries. Extensive research on injury control has been conducted in the U.S. and other industrialized countries in the past several decades, but research is still in its infancy in developing countries. In this paper,...

Analysts often use different conceptual definitions of a cohort effect, and therefore different statistical methods, which lead to differing empirical results. A definition often used in sociology assumes that cohorts have unique characteristics confounded by age and period effects, whereas...

This paper argues, both theoretically and empirically, that sometimes no securities law may be better than a good securities law that is not enforced. The first part of the paper formalizes the sufficient conditions under which this happens for any law. The second part of the paper shows that a...

Asymmetric volatility refers to the stylized fact that stock volatility is negatively correlated to stock returns. Traditionally, this phenomenon has been explained by the financial leverage effect. This explanation has recently been challenged in favor of a risk premium based explanation. We...