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. Author manuscript; available in PMC: 2011 Dec 6.
Published in final edited form as: Stat Biosci. 2010 Dec;2(2):154–179. doi: 10.1007/s12561-010-9026-x

Table 7.

Simulation results for marginal parameters from the proportional hazards model. CP denotes coverage probability and SE denotes standard error.

Estimate Jackknife SE Monte Carlo SE Robust SE Jackknife CP Robust CP Power
90 clusters
σ = 0 β1 −0.700 0.140 0.136 0.182 0.964 0.960 0.996
β2 0.765 0.237 0.236 0.185 0.956 0.944 0.912
σ = 0.05 β1 −0.711 0.138 0.124 0.183 0.964 0.964 1.000
β2 0.800 0.237 0.212 0.198 0.956 0.952 0.948
σ = 0.10 β1 −0.696 0.140 0.140 0.185 0.952 0.944 1.000
β2 0.769 0.241 0.241 0.197 0.948 0.944 0.884
σ = 0.15 β1 −0.710 0.141 0.127 0.182 0.972 0.960 1.000
β2 0.756 0.240 0.236 0.178 0.960 0.948 0.884
150 clusters
σ = 0 β1 −0.689 0.106 0.108 0.139 0.944 0.936 1.000
β2 0.743 0.182 0.173 0.141 0.956 0.956 0.988
σ = 0.05 β1 −0.679 0.106 0.101 0.138 0.952 0.952 1.000
β2 0.770 0.182 0.172 0.141 0.968 0.968 0.996
σ = 0.10 β1 −0.699 0.106 0.107 0.146 0.956 0.948 1.000
β2 0.753 0.183 0.178 0.144 0.964 0.952 0.988
σ = 0.15 β1 −0.702 0.107 0.109 0.143 0.940 0.936 1.000
β2 0.742 0.183 0.178 0.138 0.948 0.940 0.964