@techreport{NBERw10401,
 title = "Estimating the Value of a Statistical Life: The Importance of Omitted Variables and Publication Bias",
 author = "Orley Ashenfelter and Michael Greenstone",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "10401",
 year = "2004",
 month = "April",
 URL = "http://www.nber.org/papers/w10401",
 abstract = {In this paper we show that omitted variables and publication bias lead to severely biased estimates of the value of a statistical life. Although our empirical results are obtained in the context of a study of choices about road safety, we suspect that the same issues plague the estimation of monetary trade-offs regarding safety in other contexts.},
}