Table 5.

Simulation results for Normal outcome with number of repeated measures n_i = 3. Bias, mean square error (MSE) and 95% coverage probability (95% CP) for simulations with $\lambda ={\lambda }_0∕\sqrt{n}({\lambda }_0$ =0, 0.01, 0.05, 0.1, and 1)

LASSO Models		Ignorable			Moderate nonignorable			Strong nonignorable
λ0	Parameter	Bias	MSE	95% CP	Bias	MSE	95% CP	Bias	MSE	95% CP
0	β0	−0.003	0.017	94.5%	−0.007	0.016	95.5%	0.001	0.016	96.5%
	β1	−0.014	0.032	93.9%	−0.010	0.030	96.4%	−0.023	0.030	95.0%
	β2	0.012	0.009	86.4%	−0.022	0.008	88.8%	−0.043	0.011	84.8%
0.01	β0	−0.002	0.017	94.3%	−0.006	0.016	95.9%	0.002	0.016	96.5%
	β1	−0.014	0.032	94.1%	−0.012	0.029	95.7%	−0.024	0.030	94.8%
	β2	0.011	0.009	86.5%	−0.024	0.008	88.5%	−0.045	0.011	84.9%
0.05	β0	−0.002	0.017	93.7%	−0.006	0.016	95.1%	0.004	0.016	96.7%
	β1	−0.013	0.032	93.9%	−0.011	0.029	96.2%	−0.030	0.030	94.2%
	β2	0.009	0.008	87.6%	−0.031	0.008	88.2%	−0.058	0.012	80.5%
0.1	β0	−0.002	0.017	93.8%	−0.003	0.016	95.0%	0.008	0.016	96.1%
	β1	−0.011	0.032	93.4%	−0.017	0.029	95.9%	−0.039	0.030	94.0%
	β2	0.009	0.008	88.6%	−0.041	0.008	88.0%	−0.073	0.013	75.5%
1	β0	0.001	0.017	93.2%	0.009	0.016	95.2%	0.037	0.017	93.4%
	β1	−0.011	0.032	92.8%	−0.037	0.029	94.8%	−0.087	0.033	91.3%
	β2	0.001	0.005	94.0%	−0.094	0.014	71.9%	−0.157	0.030	34.8%
Ridge Models		Ignorable			Moderate nonignorable			Strong nonignorable
λ0	Parameter	Bias	MSE	95% CP	Bias	MSE	95% CP	Bias	MSE	95% CP
0	β0	−0.003	0.017	94.5%	−0.007	0.016	95.1%	0.001	0.016	95.8%
	β1	−0.014	0.032	93.9%	−0.010	0.030	96.4%	−0.023	0.030	95.0%
	β2	0.012	0.009	86.4%	−0.022	0.008	88.8%	−0.043	0.011	84.8%
0.01	β0	−0.003	0.017	94.7%	−0.006	0.016	95.6%	0.002	0.016	95.7%
	β1	−0.013	0.032	93.9%	−0.011	0.029	96.6%	−0.026	0.030	94.4%
	β2	0.011	0.009	86.8%	−0.024	0.008	88.2%	−0.049	0.011	84.6%
0.05	β0	−0.002	0.017	94.2%	−0.003	0.016	95.3%	0.006	0.016	96.3%
	β1	−0.012	0.032	94.2%	−0.014	0.029	96.1%	−0.035	0.029	94.0%
	β2	0.010	0.008	88.5%	−0.034	0.008	89.1%	−0.067	0.012	81.5%
0.1	β0	−0.002	0.017	93.2%	−0.001	0.016	95.3%	0.010	0.016	96.0%
	β1	−0.012	0.032	94.0%	−0.018	0.029	96.1%	−0.043	0.029	93.6%
	β2	0.009	0.008	89.2%	−0.042	0.008	89.1%	−0.081	0.014	79.0%
1	β0	0.000	0.017	93.4%	0.005	0.016	95.2%	0.030	0.017	94.0%
	β1	−0.011	0.032	93.0%	−0.030	0.029	94.8%	−0.076	0.031	92.8%
	β2	0.004	0.005	94.6%	−0.078	0.011	79.7%	−0.137	0.024	45.9%