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. 2013 Aug 22;15(1):170–181. doi: 10.1093/biostatistics/kxt027

Table 1.

First simulation scenario: Inline graphic, Inline graphic, censoring is 45% and 25% for Inline graphic and Inline graphic, respectively, Inline graphic, Inline graphic, Inline graphic, 300 bootstrap replicates, 95% nominal coverage with ECL representing the average CI width

No NL
NL
Quantile Variable Method Bias MSE Cov. ECL Power Bias MSE Cov. ECL Power
0.25 Variable 1 Portnoy 0.00 0.04 0.97 0.83 1.00 0.17 0.70 0.95 3.26 0.28
Inline graphic PH 0.01 0.04 0.97 0.83 1.00 −0.04 0.67 0.96 3.24 0.21
TW −0.06 0.04 0.96 0.81 1.00 0.01 0.59 0.96 3.09 0.25
Variable 2 Portnoy 0.01 0.06 0.96 0.99 1.00 −0.20 0.28 0.96 2.10 1.00
Inline graphic PH −0.01 0.06 0.96 0.99 1.00 −0.26 0.31 0.95 2.13 1.00
TW 0.10 0.06 0.95 0.97 1.00 0.06 0.21 0.97 2.02 1.00
0.5 Variable 1 Portnoy 0.01 0.03 0.96 0.71 1.00 0.10 0.52 0.95 2.85 0.34
Inline graphic PH 0.00 0.03 0.96 0.72 1.00 −0.08 0.54 0.95 2.90 0.23
TW −0.01 0.03 0.97 0.71 1.00 0.04 0.52 0.96 2.90 0.31
Variable 2 Portnoy 0.00 0.04 0.96 0.82 1.00 −0.13 0.15 0.95 1.56 1.00
Inline graphic PH 0.00 0.04 0.97 0.84 1.00 −0.15 0.16 0.95 1.62 1.00
TW 0.02 0.04 0.97 0.84 1.00 −0.03 0.13 0.97 1.60 1.00