A Note on the Weibull Distribution and Time Aggregation Bias
Røed, Knut and Zhang, Tao
The application of continuous time Weibull models on discrete unemployment duration data may result in severely biased baseline estimates. The bias can be substantial even for weekly duration data, and it is seriously aggravated if the Weibull model is erroneously mixed with a Gamma distribution for unobserved heterogeneity.
Unemployment duration, Weibull model, Time aggregation bias
Project:Oppdragsgiver: Norges forskningsråd
Frisch prosjekt: 1203 - Sorting, exposed groups and labour market programmes