Table 3.

Multivariate Cox regression analysis of overall survival with income (A) and race (B) before and after 2001

1995-2000 (n = 140)
2001-2004 (n = 412)
HR (95% CI)P*HR (95% CI)P*
A
Income0.0290.62
    Low(ref)(ref)
    Mid0.62 (0.36-5.06)0.0831.11 (0.75-1.64)0.60
    High0.55 (0.35-0.89)0.0140.90 (0.62-1.32)0.60
Age (y)1.02 (1.01-1.04)0.0041.02 (1.01-1.03)<0.001
Resection status
    Unresected(ref)(ref)
    Resected0.37 (0.24-0.56)<0.0010.48 (0.34-0.66)<0.001
B
Race0.0190.40
    White(ref)(ref)
    Hispanic2.11 (1.14-3.88)0.0161.20 (0.71-2.04)0.50
    Black1.96 (1.15-3.32)0.0160.68 (0.40-1.13)0.14
    Asian or Pacific Islander1.43 (0.81-2.51)0.230.96 (0.56-1.63)0.87
Age (y)1.03 (1.01-1.04)<0.0011.02 (1.01-1.03)0.001
Resection status
    Unresected(ref)(ref)
    Resected0.43 (0.29-0.64)<0.0010.48 (0.35-0.67)<0.001
  • NOTE: Nonsignificant independent variables, gender, and tumor size were removed from the final multivariate model.

    Abbreviation: ref, reference.

  • * P value from Wald test.