影响胃癌患者术后生存因素的Cox回归分析

Cox Regression Analysis of Factors Influencing Postoperative Survival Rate of Gastric Cancer Patients

目的探讨胃癌临床病理特征及治疗方法对患者生存率的影响。方法以1994年4月至2005年8月手术治疗和病理确诊且随访资料完整的759例胃癌患者为对象,对其外科治疗结果进行回顾性分析,用KaplanMeier计算3年和5年生存率,用Logrank单因素比较和Cox回归多因素分析比较,分析影响胃癌患者术后生存率的因素。随访时间为4～131个月,平均(62.3±6.7)个月。结果单因素分析表明,患者的年龄、肿瘤部位、肿瘤直径、Borrmann分型、组织学类型、TNM分期、肿瘤浸润深度、淋巴结转移、肝转移、腹腔种植、术中输血、根治范围及清扫方法均为影响胃癌患者术后生存的影响因素。经Cox回归多因素分析发现,肿瘤部位、直径、浸润深度、术中输血、淋巴结清扫范围、淋巴结转移、清扫方法、肝转移、腹腔种植及TNM分期为影响患者术后生存的独立预后因素。结论影响胃癌患者术后生存的独立因素有肿瘤部位、大小、淋巴结转移、肿瘤浸润深度、腹腔种植、肝转移、病理分期,根治手术范围、淋巴结清扫技术及术中输血是影响患者术后生存率的重要因素。

Objective To study the influence of clinicopathologic characteristics and surgical treatment of gastric cancer on patients＇ survival rate. Methods From Apr. 1994 to Aug. 2005, the data of 759 gastric cancer patients concerning surgical treatment, pathological diagnosis and outcome were collected. Retrospective analysis of the results was made, 3-year and 5-year survival rates were calculated by Kaplan-Meier curve method, univariate analysis was done through Log-rank and multiple factors comparison through Cox regression analysis, and follow-up duration was 4- 131 months. Results Single factor analysis indicated that age,tumor location,diameter of tumor, Borrmann type, type of histology, TNM stage, depth of infiltration, lymph node metastasis, liver metastasis, peritoneal dissemination, blood of transfusion during operation, extent of the radical cure of the tumor and excision techniques were significantly influential factors for the prognosis of patients. Cox regression analysis showed that tumor location, diameter of tumor,depth of infiltration, lymph node metastasis,liver metastasis, TNM stage, peritoneal dissemination, blood transfusion during operation, extend of the radical cure of the tumor and excision techniques were independent factors influencing the postoperative survival rate. Conclusion Independent factors influencing the postoperative survival rate include tumor location, diameter of tumor, lymph node metastasis, infiltration depth of the tumor, pathological classification, liver metastasis, peritoneal dissemination, and TNM stage, extent of the radical cure of the tumor, lymphanodectomy techniques and blood transfusion during operation are also important factors.