Table 2.

Simulation results from a random intercept and slope model^†

Parameter	Results for simulation IS I				Results for simulation IS II
	True	Mean	Coverage	MSE	True	Mean	Coverage	MSE
	value				value
Longitudinal
Intercept	90	89.842	0.940	7.743	90	89.994	0.950	0.020
		(2.781)				(0.141)
Time	−1.7	−1.701	0.950	0.012	−1.7	−1.701	0.952	0.001
		(0.109)				(0.036)
Age at t0	−1.7	−1.693	0.956	0.016	−1.7	−1.700	0.950	0.000
		(0.125)				(0.006)
Sex (males)	2	2.056	0.952	1.840	2	2.003	0.956	0.005
		(1.357)				(0.071)
Survival
Intercept	2	2.051	0.946	0.054	2	2.015	0.962	0.035
		(0.226)				(0.187)
Time	0.01	0.009	0.956	0.001	0.01	0.010	0.946	0.001
		(0.037)				(0.037)
Age at t0	0.01	0.010	0.932	0.000	0.01	0.010	0.948	0.000
		(0.010)				(0.009)
Sex (males)	0.1	0.112	0.966	0.010	0.1	0.113	0.938	0.012
		(0.100)				(0.107)
γ1	0.01	0.011	0.970	0.000	0.01	0.019	0.950	0.011
		(0.005)				(0.107)
γ2	0.1	0.112	0.970	0.011	0.1	0.107	0.946	0.007
		(0.106)				(0.084)
Others
ν	7	6.997	0.952	0.006	1	1.000	0.972	0.000
		(0.080)				(0.011)
σ1	25	24.993	0.948	0.409	1	0.994	0.980	0.002
		(0.640)				(0.042)
σ2	2	1.989	0.940	0.012	1	0.999	0.952	0.001
		(0.112)				(0.027)
ρ	−0.6	−0.600	0.950	0.001	−0.6	−0.599	0.958	0.001
		(0.038)				(0.032)

^†Sample size 1000 and 500 replicates. Shown are the mean (with standard deviations in parentheses) parameter estimates, empirical coverage probabilities of nominal 95% confidence intervals and mean-squared errors MSE.