Analysis of the relationship between air pollution and asthma

In recent years, considerable attention has been devoted to methods for analyzing longitudinal data. A review of some of the issues surrounding the use of regression analysis is undertaken as they relate to a study of the health effects of air pollution in a group of asthmatics. Daily diary recordings of hours with asthma symptoms are found to be positively related to the daily mean concentration of total reduced sulphur as well as to the daily intake of nonsteroidal drug medication. This finding is corroborated using three different statistical models.     

The cost of accidental death: A capital market approach

This article analyzes the effect of accidental deaths involving either a firm's workplace or product on the firm's shareholder equity. Significant and sustained losses were found, reaching a peak of over $50 million per fatality during the second week following an accident. The variation in the cumulative percentage loss to the firms due to the accidents is explained by the number of deaths per accident and the riskiness of the product or workplace—the lower the a priori perceived riskiness, the greater the decline in equity.