Spurious correlation in estimation of the health production function
In this paper, we address the issue of spurious correlation in the production of health in a systematic way. Spurious correlation entails the risk of linking health status to medical (and nonmedical) inputs when no links exist. This note first presents the bounds testing procedure as a method to detect and avoid spurious correlation. It then applies it to a recent contribution by Lichtenberg (2004), which relates longevity in the United States to pharmaceutical innovation and public health care expenditure. The results of the bounds testing procedure show longevity to be linearly related to these two factors. Therefore, the estimates reported by Lichtenberg (2004) cannot be said to be result of spurious correlation, to the contrary, they very likely reflect an effective relationship, at least for the United States.
|Date of creation:||May 2009|
|Contact details of provider:|| Postal: Leonhardstrasse 21, CH-8092 Zürich|
Phone: +41 44 632 42 39
Fax: +41 44 632 12 18
Web page: http://www.kof.ethz.ch
More information through EDIRC