Unobserved Heterogeneity in Multiple-Spell Multiple-States Duration Models     multiple spell multiple state duration  mixed proportional hazard  multistate model  unobserved heterogeneity  frailty       font style='font-size:12px;'> 2012/10/26

In survival analysis a large literature using frailty models, or models with unobserved heterogeneity, exist. In the growing literate on multiple spell multiple states duration models, or multistate m...

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Unobserved Heterogeneity and Risk in Wage Variance: Does Schooling Provide Earnings Insurance?     wage inequality  wage uncertainty  unobserved heterogeneity  selectivity  education  replication       font style='font-size:12px;'> 2012/11/1

We apply a recently proposed method to disentangle unobserved heterogeneity from risk in returns to education. We replicate the original study on US men and extend to US women, UK men and German men. ...

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