Table 4.

Mean (empirical standard deviation) of maximum likelihood estimates of parameters from the NEC model across 500 simulated data sets using J = 2,4,10 repeat measurements when the true proportion of never consumers is 87%: With and without FFQ adjustment

Parameter	Without FFQ adjustment			With FFQ adjustment
	J = 2	J = 4	J = 10	J = 2	J = 4	J = 10
γ1	1.87 (0.19)	2.03 (0.10)	2.06 (0.08)	0.14 (0.09)	0.13 (0.06)	0.13 (0.04)
γ2	2.58 (0.14)	2.78 (0.08)	2.84 (0.07)	0.92 (0.08)	0.92 (0.06)	0.92 (0.05)
σu12	7.19 (2.26)	3.67 (0.59)	3.17 (0.27)	0.14 (0.16)	0.07(0.06)	0.04 (0.02)
σu22	4.17 (0.35)	3.79 (0.24)	3.66 (0.18)	0.61 (0.07)	0.61 (0.05)	0.61 (0.04)
ρ	0.88 (0.03)	0.91 (0.01)	0.92 (0.01)	0.41 (0.50)	0.61 (0.32)	0.72 (0.19)
σϵ2	1.28 (0.07)	1.28 (0.04)	1.28 (0.02)	1.28 (0.07)	1.28 (0.04)	1.28 (0.02)
ξ1	-	-	-	0.91 (0.06)	0.90 (0.04)	0.90 (0.02)
ξ2	-	-	-	0.88 (0.02)	0.88 (0.02)	0.88 (0.02)
H(γ0)	0.96 (0.04)	0.88 (0.01)	0.88 (0.01)	0.38 (0.04)	0.37 (0.04)	0.37 (0.03)
Proportion of consumers	0.96 (0.04)	0.88 (0.01)	0.88 (0.01)	0.87 (0.01)	0.87 (0.01)	0.87 (0.01)