Keirn W, Metter G
Cancer. 1985 Apr 1;55(7):1552-5. doi: 10.1002/1097-0142(19850401)55:7<1552::aid-cncr2820550723>3.0.co;2-e.
Patients with lung, breast, and colorectal cancer were classified as to their economic status for comparison of survival. Patients at the City of Hope Medical Center are admitted and treated without regard to their economic status, providing an excellent place to test the effect of low economic status on survival. In none of these disease sites was an effect of low economic status observed, even when adjusting for age, sex, stage, smoking status, and alcohol usage. The only variable that consistently predicted survival was stage of disease; when accounting for stage, there was no independent effect of low economic status. In the presence of uniform care, low economic status as defined in this study is not a factor in patient survival.
为比较生存率，对肺癌、乳腺癌和结直肠癌患者进行了经济状况分类。希望之城医疗中心的患者无论经济状况如何均可入院接受治疗，这为测试低经济状况对生存率的影响提供了一个绝佳场所。在这些疾病部位中，即使对年龄、性别、分期、吸烟状况和饮酒情况进行调整，也未观察到低经济状况产生的影响。唯一始终能预测生存率的变量是疾病分期；考虑分期因素后，低经济状况并无独立影响。在统一护理的情况下，本研究中所定义的低经济状况并非影响患者生存率的因素。
