First do no harm?

"We examine the impact of tort reforms using U.S. birth records for 1989-2001. We make four contributions: First, we develop a model that analyzes the incentives created by specific tort reforms. Second, we assemble new data on tort reform. Third, we examine a range of outcomes. Finally, we allow for differential effects by demographic/risk group. We find that reforms of the "deep pockets rule" reduce complications of labor and C-sections, while caps on noneconomic damages increase them. Our results demonstrate there are important interactions between incentives created by tort law and other incentives facing physicians"--National Bureau of Economic Research web site.