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. Author manuscript; available in PMC: 2010 May 11.
Published in final edited form as: Stat Appl Genet Mol Biol. 2009 Feb 11;8(1):Article–14. doi: 10.2202/1544-6115.1423

Table 4.

Comparison of computation times for LASSO-Cox (L-Cox), EN-Cox, EN-AFT (BJ: Buckley-James imputation, M: mean imputation) methods (in seconds). p: number of variables, N: number of subjects.

p N L-Cox EN-Cox EN-AFT-BJ EN-AFT-M
200 50 164.57 62.65 0.98 0.05
200 100 200.04 110.41 1.39 0.06
200 150 648.53 133.61 5.63 0.08
500 150 1107.85 217.95 6.33 0.10
1000 150 1134.76 508.79 11.02 0.29