. Author manuscript; available in PMC: 2013 Dec 31.

Published in final edited form as: Stat Med. 2012 Jul 4;31(28):10.1002/sim.5440. doi: 10.1002/sim.5440

Table 5.

Hazard Ratio Estimates for Brain Metastasis Trial

Estimator	Estimate	SE	HR (95% CI)
β̂_PH	−0.142	0.144	0.87 (0.65, 1.15)
β̂_PH^*	−0.142	0.131	0.87 (0.67, 1.12)
β̂_IC	−0.074	0.118	0.93 (0.74, 1.17)
β̂_CIC	−0.104	0.144	0.90 (0.68, 1.19)

All subjects surviving beyond 30 months are censored at 30 months.

Indicates robust variance estimator used.