Table 4.

The average squared bias and mean squared error for 11 estimators based on 100 simulated datasets using the prevalence models (P4), (P5), (P6) and the four sampling scenarios. Figures in bold denote the row minimum.

		UM	HT	NB	LN	AS	PL	ES	M1	M2	M1	M2
									RW1	RW1	PS	PS
Bias2 (×103)
(P4)	(S1)	0.03	0.03	0.52	0.71	0.41	0.52	0.55	0.52	0.52	0.52	0.52
(P4)	(S2)	0.04	0.04	0.58	0.79	0.43	0.48	0.58	1.37	1.35	0.58	0.58
(P4)	(S3)	0.03	0.04	0.56	0.74	0.41	0.52	0.57	1.02	0.81	0.56	0.56
(P4)	(S4)	0.02	0.02	0.50	0.69	0.37	0.48	0.52	0.62	0.66	0.50	0.50
(P5)	(S1)	0.03	0.03	0.73	0.92	0.56	0.73	0.75	0.65	0.65	0.69	0.69
(P5)	(S2)	4.08	0.12	4.74	0.91	0.59	0.73	0.74	3.58	2.30	0.94	0.91
(P5)	(S3)	1.93	0.06	2.59	0.90	0.58	0.76	0.74	3.09	1.65	0.81	0.81
(P5)	(S4)	0.28	0.04	1.03	0.91	0.54	0.70	0.73	1.43	1.29	0.76	0.76
(P6)	(S1)	0.02	0.02	0.65	0.86	0.50	0.65	0.68	0.58	0.58	0.61	0.61
(P6)	(S2)	3.27	0.08	3.92	0.81	0.50	0.62	0.63	2.90	1.89	0.80	0.77
(P6)	(S3)	1.54	0.06	2.19	0.81	0.52	0.68	0.66	2.69	1.32	0.72	0.72
(P6)	(S4)	0.23	0.06	0.89	0.81	0.47	0.60	0.64	1.26	1.04	0.67	0.67
MSE (×103)
(P4)	(S1)	2.65	2.66	1.49	1.57	1.50	1.49	1.50	1.49	1.49	1.48	1.49
(P4)	(S2)	2.60	3.75	1.56	2.11	2.01	2.04	2.03	2.23	2.34	1.56	1.56
(P4)	(S3)	2.46	2.86	1.50	1.73	1.63	1.66	1.65	2.01	1.91	1.51	1.51
(P4)	(S4)	2.55	2.80	1.45	1.62	1.54	1.54	1.54	1.77	1.74	1.45	1.44
(P5)	(S1)	3.47	3.49	2.12	2.18	2.15	2.12	2.12	2.24	2.24	2.23	2.23
(P5)	(S2)	6.98	5.71	5.81	3.13	3.28	3.20	3.14	4.69	3.89	2.56	2.57
(P5)	(S3)	4.80	4.18	3.70	2.48	2.56	2.49	2.47	4.04	3.30	2.27	2.28
(P5)	(S4)	3.52	3.67	2.29	2.27	2.25	2.22	2.21	3.15	2.95	2.30	2.30
(P6)	(S1)	3.08	3.09	1.82	1.90	1.86	1.82	1.82	1.92	1.92	1.92	1.92
(P6)	(S2)	5.93	5.57	4.86	2.99	3.12	3.05	3.02	4.03	3.55	2.25	2.25
(P6)	(S3)	4.27	3.94	3.18	2.19	2.27	2.20	2.18	3.47	2.89	2.03	2.04
(P6)	(S4)	3.30	3.49	2.01	2.01	1.98	1.94	1.94	2.71	2.60	2.01	2.01