Table 2.

Simulation results for f₀ estimation under SPGLM data–generating mechanisms and models

Support	Truncated Poisson		0-Inflated Poisson
	True f0	Bias (SE)	True f0	Bias (SE)
0	0.367	– 0.004 (0.030)	0.471	– 0.005 (0.028)
1	0.368	0.003 (0.037)	0.232	0.003 (0.031)
2	0.185	0.002 (0.039)	0.172	0.005 (0.035)
3	0.062	0.002 (0.025)	0.085	0.001 (0.027)
4	0.016	0.002 (0.017)	0.031	– 0.002 (0.020)
5	0.003	0.001 (0.009)	0.009	– 0.002 (0.012)

SE, standard error. True β values are in Table 1.