Table 3.

Simulation results from a Weibull model^†

Parameter	True	Results for longitudinal model			Results for joineR
	value
		Mean	Coverage	MSE	Mean	Coverage	MSE
Longitudinal
Intercept	90	90.213 (1.133)	0.948	1.326	89.982 (1.106)	0.954	1.222
Time	−1.7	−1.628 (0.061)	0.794	0.009	−1.698 (0.061)	0.954	0.004
Sex (males)	2	1.806 (1.578)	0.964	2.522	1.944 (1.581)	0.946	2.497
Survival
Sex (males)	−0.3	—	—	—	−0.300 (0.196)	0.958	0.038
γ1	−0.1	—	—	—	−0.100 (0.005)	0.926	0.000
Others
ν	7	7.007 (0.086)	0.928	0.007	6.999 (0.082)	0.946	0.007
σ1	25	24.789 (0.577)	0.824	0.377	24.977 (0.547)	0.956	0.300

^†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. For the longitudinal model standard errors were calculated for variance parameters by using bootstrapping.