Study Design. Prospectie case - control study testing a new diagnostic method.

研究设计: 为试验一种新的诊断方法而做的预期病例对照研究.

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Methods: A case control study was conducted.

方法: 采用病例对照研究.

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Design Retrospective case control study.

设计回顾性病例对照研究.

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Methods Prevalence survey and case control study.

方法现况调查和危险因素的病例对照研究.

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Methods Case control study.

方法断面对照研究.

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Methods Case control study was used.

方法采用病例对照研究.

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Title: Comparison of two techniques of transarterial chemoembolization before lier transplantation for hepatocellular carcinoma: A case - control study.

肝细胞性肝癌在肝移植前两种经动脉介入化疗方法的比较: 病倒 - 对照研究.

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Methods: The case control study was performed in 260 patients with cyclomastopathy grouped randomly.

方法前瞻性随机对照研究260例乳腺增生症患者.

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Methods Clinical epidemiological study methods included cross - sectional study, case - control study, diagnostic test evaluation and cost - effectiveness analysis.

方法采用临床流行病学的研究方法,包括横断面调查 、 病例对照研究 、 诊断试验评价及费用效果分析.

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A population survey - based nested 1:3 matched case - control study paired by age, sex and index ( BMI ) was conducted.

以人群调查为基础,采用嵌套1︰3配对病例对照研究方法,配对条件:年龄 、 性别和体重指数.

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