Table 2

Cox proportional hazard model for survival time

Survival time was coded as an interval, beginning with the time of last serum measurement and ending at either the time of death or the time of censoring. The model also included the natural logarithm of the time of the last serum sampling as a covariate, and in this multivariate model, it was also significantly related to survival time (P = 0.0011).

MarkerParameterCoefficientSEP
PSAα0.1120.0370.003
β0.7460.200.00016
γ2.400.770.0018
Hemoglobinα−1.920.475.1× 10−5
β−4.461.137.6× 10−5
γ−10.82.950.00024