Variables

Before PSM

After PSM

HR (95% CI)

P value

HR (95% CI)

P value

Group, F5~6 (vs. F0~4)

1.340(1.104~1.626)

0.003

1.284(0.993~1.660)

0.057

Age at diagnosis, >60 (vs. ≤60)

1.433 (1.270~1.617)

<0.001

1.302 (1.004~1.689)

0.047

Sex, female (vs. male)

1.247 (1.083~1.437)

0.002

1.153 (0.844~1.574)

0.371

AJCC T, 7th ed., T3~4 (vs. T1–2)

0.791 (0.507~1.235)

0.302

0.777 (0.318~1.901)

0.581

AJCC N, 7th ed., N1 (vs. N0)

0.393 (0.098~1.574)

0.187

/

0.951

AJCC M, 7th ed., M1 (vs. M0)

0.965 (0.310~3.000)

0.950

/

/

Tumor size, >1 cm (vs. ≤1 cm)

0.442 (0.142~1.377)

0.159

0.377 (0.093~1.533)

0.173

Race Black(vs. White)

1.224 (0.988~1.515)

0.064

0.912 (0.582~1.428)

0.686

Race Other(vs. White)

0.817 (0.692~0.964)

0.016

0.593 (0.424~0.829)

0.002

AFP, Negative (vs. Positive/elevated)

1.046 (0.920~1.190)

0.493

0.976 (0.734~1.298)

0.868

Grade, Moderately differentiated; Grade II (vs. Well differentiated; Grade I)

1.159 (0.999~1.344)

0.051

1.422 (1.037~1.951)

0.029

Grade, Poorly differentiated; Grade III (vs. Well differentiated; Grade I)

0.819 (0.632~1.062)

0.133

0.731 (0.452~1.180)

0.199

Grade, Undifferentiated; anaplastic; Grade IV (vs. Well differentiated; Grade I)

0.754 (0.242~2.352)

0.627

/

0.952

Lymph involvement, Yes (vs. No )

0.714 (0.267~1.906)

0.501

/

0.954

Distant metastasis, Yes (vs. No )

1.166 (0.436~3.113)

0.760

1.000 (0.143~6.998)

1.000