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Table 4: Cox proportional multivariate analysis of factors associated with cancer-specific mortality.

Characteristics Group HR (95% CI) $P$ Value Age 1.00 (0.99–1.01) .56 Gender Male 1.00 Female 1.27 (0.93–1.71) .14 Race White 1.00 Black 1.41 (0.93–2.13) .10 Others 1.36 (0.91–2.03) .13 SEER Stage Localized 1.00 Regional 1.59 (1.10–2.33) .018 Distant 2.50 (1.70–3.61) <.0001 Grade Low 1.00 High 1.45 (0.90–2.32) .13 Unknown 1.02 (0.66–1.57) .94 Civil Status Married 1.00 Widowed 1.21 (0.81–1.83) .36 Divorced /Separated 0.96 (0.59–1.54) .85 Single 1.01 (0.68–1.49) .96 Unknown 0.61 (0.31–1.24) .17 Diagnosis Year 1973–1988 1.00 1989–2004 0.81 (0.60–1.09) .16 Radiation No 1.00 Yes 0.82 (0.50–1.38) .47 Cancer Directed Surgery No 1.00 Transplantation 0.25 (0.13–0.50) <.0001 Resection 0.26 (0.15–0.44) <.0001 Other Surgery 0.28 (0.15–0.53) <.0001

HR: hazard ratio; CI: confidence interval; low grade: well differentiated/moderately differentiated; high grade: poorly differentiated/undifferentiated; other surgery: local surgery plus unknown surgery; SEER: surveillance, epidemiology, and end results.