Table 5.

Summary of fixed effect estimation in a simulation study described in Section 5; here the model is equidispersed, υ = 1.

		hurdle mixed CMP			hurdle mixed Poisson
	True	Bias	MSE	CR	Bias	MSE	CR
${\widehat{\beta }}_0$	−0.40	0.0242	0.1249	0.940	0.0250	0.1246	0.935
${\widehat{\beta }}_1$	−1.00	−0.0041	0.0134	0.960	−0.0041	0.0134	0.950
${\widehat{\beta }}_2$	−0.20	−0.0116	0.0442	0.940	−0.0116	0.0442	0.950
${\widehat{\beta }}_3$	0.20	−0.0009	0.0009	0.965	−0.0009	0.0009	0.965
${\widehat{\beta }}_4$	−0.60	−0.0065	0.0308	0.945	−0.0068	0.0308	0.945
${\widehat{\alpha }}_0$	0.20	0.0344	0.1504	0.940	−0.0064	0.0982	0.930
${\widehat{\alpha }}_1$	−2.00	−0.0118	0.1401	0.960	0.0014	0.1330	0.965
${\widehat{\alpha }}_2$	−0.20	−0.0101	0.0360	0.950	−0.0080	0.0348	0.950
${\widehat{\alpha }}_3$	0.05	0.0022	0.0007	0.965	0.0015	0.0007	0.975
${\widehat{\alpha }}_4$	−0.30	−0.0051	0.0271	0.945	−0.0027	0.0264	0.935
$\widehat{\upsilon }$	1.00	0.0461	0.0548	0.955	0.0000	N/A	N/A