From: Survival improvement and prognosis for hepatocellular carcinoma: analysis of the SEER database
 | Overall |  | Localized stage | Regional stage |  | Distant stage |  | |
---|---|---|---|---|---|---|---|---|
 | HR (95% CI) | P-value | HR (95% CI) | P-value | HR (95% CI) | P-value | HR (95% CI) | P-value |
Year of diagnosis | ||||||||
 1998–2002 | Ref |  | Ref |  | Ref |  | Ref |  |
 2003–2007 | 0.93 (0.88–0.98) | 0.003 | 0.89 (0.83–0.96) | 0.001 | 0.98 (0.91–1.07) | 0.71 | 1.11 (0.93–1.33) | 0.24 |
 2008–2012 | 0.80 (0.76–0.84) | < 0.001 | 0.74 (0.69–0.79) | < 0.001 | 0.86 (0.79–0.93) | < 0.001 | 1.11 (0.93–1.32) | 0.24 |
 2013–2015 | 0.75 (0.71–0.79) | < 0.001 | 0.63 (0.59–0.68) | < 0.001 | 0.84 (0.77–0.91) | < 0.001 | 1.12 (0.94–1.34) | 0.22 |
Age in groups (years) | ||||||||
 18–44 | Ref |  | Ref |  | Ref |  | Ref |  |
 45–54 | 1.17 (1.08–1.26) | < 0.001 | 1.31 (1.16–1.49) | < 0.001 | 1.07 (0.95–1.20) | 0.29 | 1.11 (0.95–1.31) | 0.19 |
 55–64 | 1.14 (1.06–1.23) | < 0.001 | 1.31 (1.15–1.48) | < 0.001 | 1.01 (0.90–1.13) | 0.91 | 1.08 (0.92–1.26) | 0.35 |
 65–74 | 1.27 (1.17–1.37) | < 0.001 | 1.56 (1.38–1.77) | < 0.001 | 1.07 (0.96–1.21) | 0.24 | 1.09 (0.93–1.28) | 0.27 |
  ≥ 75 | 1.53 (1.41–1.65) | < 0.001 | 1.96 (1.72–2.22) | < 0.001 | 1.25 (1.11–1.41) | < 0.001 | 1.19 (1.01–1.40) | 0.04 |
Sex | ||||||||
 Female vs. male | 0.94 (0.91–0.97) | < 0.001 | 0.93 (0.89–0.98) | 0.002 | * |  | * |  |
Race | ||||||||
 White | Ref |  | Ref |  | Ref |  | * |  |
 Black | 1.04 (0.99–1.08) | 0.07 | 1.06 (1.00–1.13) | 0.04 | 1.04 (0.98–1.10) | 0.23 | * |  |
 Other | 0.81 (0.78–0.84) | < 0.001 | 0.74 (0.70–0.77) | < 0.001 | 0.84 (0.79–0.89) | < 0.001 | * |  |
Ethnicity | ||||||||
 Hispanic vs. non-Hispanic | 0.96 (0.93–0.99) | 0.02 | * |  | 0.93 (0.88–0.98) | 0.009 | * |  |
Marital status | ||||||||
 Married vs. not married | 0.88 (0.86–0.91) | < 0.001 | 0.84 (0.81–0.87) | < 0.001 | 0.94 (0.90–0.98) | 0.003 | 0.92 (0.86–0.97) | 0.005 |
SEER stage | ||||||||
 Localized | Ref |  | * |  | * |  | * |  |
 Regional | 1.48 (1.43–1.55) | < 0.001 | * |  | * |  | * |  |
 Distant | 2.54 (2.42–2.66) | < 0.001 | * |  | * |  | * |  |
Tumor size (cm) | ||||||||
  ≤ 2 | Ref |  | Ref |  | Ref |  | Ref |  |
 2–5 | 1.50 (1.42–1.57) | < 0.001 | 1.59 (1.49–1.69) | < 0.001 | 1.41 (1.28–1.55) | < 0.001 | 0.96 (0.83–1.11) | 0.57 |
  > 5 | 2.51 (2.39–2.64) | < 0.001 | 2.81 (2.64–3.00) | < 0.001 | 2.39 (2.18–2.62) | < 0.001 | 1.18 (1.03–1.35) | 0.021 |
Tumor extent | ||||||||
 Single lesion w/o vascular invasion | Ref |  | Ref |  | Ref |  | Ref |  |
 Multiple lesions w/o vascular invasion | 1.36 (1.31–1.42) | < 0.001 | 1.44 (1.38–1.50) | < 0.001 | 1.13 (0.96–1.33) | 0.15 | 1.09 (0.97–1.22) | 0.17 |
 Lesion(s) w/vascular invasion | 1.31 (1.26–1.36) | < 0.001 | 1.27 (1.21–1.35) | < 0.001 | 1.42 (1.31–1.54) | < 0.001 | 1.23 (1.13–1.33) | < 0.001 |
Lymph node involvement | ||||||||
 Yes vs. No | 1.14 (1.09–1.20) | < 0.001 | * |  | 1.30 (1.22–1.38) | < 0.001 | * |  |
Surgery | ||||||||
 No surgery performed | Ref |  | Ref |  | Ref |  | Ref |  |
 Liver-directed therapy | 0.54 (0.52–0.56) | < 0.001 | 0.56 (0.53–0.59) | < 0.001 | 0.52 (0.48–0.56) | < 0.001 | 0.41 (0.33–0.51) | < 0.001 |
 hepatic resection/lobectomy | 0.35 (0.33–0.37) | < 0.001 | 0.34 (0.32–0.36) | < 0.001 | 0.38 (0.35–0.41) | < 0.001 | 0.35 (0.29–0.41) | < 0.001 |
 Hepatectomy with transplant | 0.14 (0.13–0.15) | < 0.001 | 0.14 (0.12–0.15) | < 0.001 | 0.14 (0.12–0.16) | < 0.001 | 0.33 (0.21–0.51) | < 0.001 |