case- control study的意思|示意

Purpose To explore the risk factors of hepatocellular carcinoma (HCC) with the aid of nested case control study.

目的应用巢式病例对照研究方法，探讨原发性肝癌（HCC）的危险因素。

Preterm delivery was associated with maternal drug-treated hypertension and impaired renal function. A matched case-control study showed no evidence of increased renal allograft loss after pregnancy.

早产与母亲服药治疗高血压及肾功能损害有关。一项配对病例对照研究发现没有证据表明妊娠会增加移植肾失功发生率。

Methods Case control study and self-control study in Chinese herbal treatment group were conducted.

方法采用病例对照研究和中药治疗组自身前后对照研究。

Mehtods a case control study was carried out and polymerase chain reaction (PCR) technique was used to identify GSTM1, GSTT1 genotype in 89 cases of primary gastric cancer and 94 controls.

方法采用病例对照分子流行病学研究方法和聚合酶链反应技术，检测89例原发性胃癌病例和94例对照GSTM 1和GSTT1基因型。

Methods This is a case control study. 40 type 2 diabetic patients with gallstones(DG)and 40 type 2 diabetic patients without gallstones(NDG)were enrolled.

方法采用病例对照研究的方法，观察2型糖尿病伴胆囊结石组（DG）及不伴胆囊结石组（NDG）各40例。

Methods Prevalence survey and case-control study on risk factors was conducted.

方法采用现况调查和危险因素病例对照研究法进行研究。