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. 2012 Jun 19;107(3):531–536. doi: 10.1038/bjc.2012.228

Table 2. Patient survival.

Survival Year 1 Year 5 Year 15
DSS
 Cohort 1973–82 0.7808 0.647 0.5742
 Cohort 1983–92 0.8849 0.7926 0.7363
 Cohort 1993–2002 0.9536 0.8822 0.8258
Log-rank (χ2) =37.82, P<0.001, Peto-Peto (χ2)=40.6, P<0.001, Wald test (χ2)=34.60, P<0.001
       
CaSS
 Cohort 1973–82 0.7549 0.6217 0.5226
 Cohort 1983–92 0.8816 0.7822 0.7096
 Cohort 1993–02 0.9495 0.8696 0.7524
Log-rank (χ2) =40.38, P<0.001, Peto-Peto (χ2)=45.29, P<0.001, Wald test (χ2)=35.67, P<0.001
       
Any cause
 Cohort 1973–82 0.751 0.5968 0.4503
 Cohort 1983–92 0.8709 0.7417 0.6112
 Cohort 1993–02 0.9334 0.845 0.7115
Log-rank (χ2) =32.22, P<0.001, Peto-Peto (χ2)=40.6, P<0.001, Wald test (χ2)=31.2, P<0.001