Table 2.

Log-rank test (p-value)

	Cooper	Kelly	Kocher	Metzenbaum	Pean
Cooper		0.316	0.159	0.036	0.024
Kelly	0.316		0.017	0.003	0.004
Kocher	0.159	0.017		0.328	0.106
Metzenbaum	0.036	0.003	0.328		0.559
Pean	0.024	0.004	0.106	0.559

Results of the log-rank test and the p-value pair for each instrument