Table 4.

Multivariable cox proportional hazards model of disease-free survival (n = 95a)

Adjustment variablesComparisonHRb95% CI LL95% CI ULP ec
GSK3β≤Q3 vs. >Q30.650.391.070.092
Surgical margin statusNegative vs. positive1.220.741.990.44
Negative vs. unknown0.570.330.970.04
CA19-9Continuous (unit increase = 30)1.041.011.070.0091
  • aThis multivariable model excludes 68 patients with no pretreatment CA19-9 value. The Lewis antigen-negative patients were analyzed as CA19-9 = 0.

  • bHR of 1 indicates no difference between the two subgroups. The variables were coded such that a HR< 1 indicates a decreased risk of death for the second level of the variables listed.

  • cP value from the Wald χ2 test using the Cox proportional hazards model.