True and Spurious Duration Dependence: The Identifiability of the Proportional Hazard Model
Chris Elbers () and
Review of Economic Studies, 1982, vol. 49, issue 3, 403-409
Lancaster and Nickell (1980) have argued that in the proportional hazard model the effects of time dependence (true duration dependence) and unobserved sample heterogeneity (spurious duration dependence) cannot be distinguished. We show that both effects can be distinguished if the model allows for observed explanatory variables in the hazard. We also discuss the application of our result to practical situations.
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Persistent link: http://EconPapers.repec.org/RePEc:oup:restud:v:49:y:1982:i:3:p:403-409.
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