Table 3

Multivariate Cox’s regression analysis of overall and relapse-free survival

FactorRisk ratio95% Confidence intervalP
Overall survival
 Methylation status1.950.89–4.260.095
 Age of patient1.941.26–2.980.003
 Stage of tumor1.781.14–2.780.012
2-year survival
 Methylation status2.711.14–6.450.024
 Age of patient2.031.21–3.390.007
 Stage of tumor1.480.92–2.930.11
Overall relapse-free survival
 Methylation status2.080.89–4.870.09
 Age of patient1.911.19–3.070.007
 Stage of tumor2.191.27–3.770.005
2-year, relapse-free survival
 Methylation status2.51.11–5.60.027
 Age of patient1.961.23–3.120.004
 Stage of tumor1.671.05–2.640.029