Ridder, G.

ridder / journal effect bonus hazard 2 slr estimator duration group estimate experiment treatment model estimator parameter baseline hazard control group distribution press g.e compliance journal control baseline intervention econometrics press table bijwaard ridder treatment effect article 77–111 censoring hazard rate program ffiffiffiffiffiffiffiffiffiffiffiffi sample process unemployment indicator function assumption stage claimant observation regression fication result employer re-employment bonus experiment speci re-employment probability fi rst stage treatment indicator characteristic heterogeneity 2 slr program effect variance speci fication signi ficantly mph model outcome individual equation bonus experiment interval error treatment group regression parameters program effects bene fit exhaustion population intensity condition y þk ð event appendix exogenou dependence study