AFP and hepatocellular carcinoma: The univariate OS analysis showed that cases with AFP ≥ 400 ng/ml (HR: 3.68, 95% CI 1.15 to 11.73, P = 0.019) had a worse OS, while there was no significant correlation between patient gender, nationality, age, BMI, tumor diameter, CA199, HBsAg, liver cirrhosis or postoperative adjuvant TACE and HCC OS (all P > 0.05) (Table 5).