方法断面对照研究。
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。
Methods Case control study of 544 high risk persons and 448 controls from Beijing, Nanjing, Changchun.
方法来自北京、南京、长春544名性滥者和448名对照进行病例对照研究。
Via the methods of literature reviews, case study and factor and force analysis, the paper is trying to study the quality control of professional master degree in the United States.
本文运用文献分析、案例分析、因素分析等方法对美国专业硕士学位教育的质量控制进行研究。
Methods a community based case control study was designed.
方法以社区为基础的病例对照研究。
Methods A 1:1 matched case-control study was performed exposure to analyse some exposure factors in home environment that related with asthma.
方法应用1∶1配对的病例对照研究方法，调查和分析家庭环境中与儿童哮喘有关的暴露因素。
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 Reviewing investigation was used for the MV coverage rate and immunization efficacy (ve), a case control study was carried for seeking risk factors.
方法采用回顾性调查研究方法计算麻疹疫苗(MV)效力(VE)，采用病例对照研究进行传播因素分析。
Methods A case control study was conducted. 152 BP patients and 152 workers occupationally exposed to benzene without poisoning manifestations were involved.
方法采用病例-对照研究，选择152名苯中毒工人为病例组，152名接触苯而无中毒表现的工人为对照组。
Methods a 1:1 matched case-control study was conducted 175 patients with gastric cancer and 175 controls were surveyed by questionnaire.
方法采用1：1配对的病例对照研究，对175对病例及对照进行饮食及生活行为问卷调查。
Methods a 1:1 matched case-control study with 50 pairs on risk factors of cataract was carried out in Hefei city and Dingyuan county.
方法采用1：1病例对照研究方法对合肥市及定远县50对老年性白内障及对照进行问卷调查。
Methods The case-control association study and were adopted to examinate color perception before and after intraocular lens implantation and in 97 patients.
方法用病例对照研究方法，选择行白内障手术的患者97例，进行色觉检查及填写统一设计的问卷调查。
Methods 1: m matched case-control study was conducted.
方法采取1：M匹配的病例对照研究。
METHODS A case control study was carried out using the cognitive laterality battery of neuropsychological test (CLB), based on 17 diagnosed left frontal tumor patients.
方法采用认知侧化成套测验（CL B）对17例左侧额叶肿瘤患者及正常对照组进行研究。
Methods: A nested case-control study.
方法：采用成组病例对照研究。
Methods the study was carried out by case control analysis of the clinical manifestations and the data from cine selective coronary angiography.
方法对经冠状动脉造影检查的冠心病患者进行临床表现和造影结果对照分析。
Methods A large scale of case-control study was conducted in Chaoshan region of China, which is one of high incidence district of esophageal cancer.
方法在中国食管癌高发区之一潮汕地区进行了一项大型的病例-对照研究。
Through study on the case of ERP implementation project of t Group, above three methods of process control are proved to be effective in improving the success rate of ERP implementation.
最后通过T集团ERP项目实施案例研究，证明了以上三种过程控制方法在提高ERP实施成功率方面的有效性。
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。
Methods Epidemiological field survey and case-control study.
方法采用流行病学现场调查和病例对照研究。
Methods Cross-sectional study and case-control study were performed.
方法现况调查和病例对照研究。
Methods: By the case-control study, 65 cases with acute cerebral infarction patients group and 50 healthy persons control group were selected.
方法：采用病例对照的研究方法，选择急性脑梗死患者65例为病例组，健康体检者50例为对照组。
Methods a case control study with 100 cases of CHD and 100 pair matched controls was conducted with occupational stress factor scales and multivariate analysis.
方法应用职业紧张因素测试表，对100例冠心病患者1∶1配对病例对照进行多因素分析。
Methods: A 1:1 Case-control study of 139 cases who were in six hospitals of Harbin was used.
方法：对139例在哈尔滨市六大医院住院的经临床确诊的患者进行1：1配比病例对照研究。
Methods: The case-control study was used for the investing.
方法：采用病例对照研究方法。
Methods a case-control study was conducted in Xicheng District and Haidian District of Beijing in 2004.
方法于2004年在北京市西城区和海淀区进行病例对照调查。
Methods the study was carried out by case control analysis of clinical manifestations and the data were presented as imagine of cine selective coronary angiography (CAG).
方法对行冠状动脉造影病例进行临床表现和造影结果对照分析。
Methods: 86 newly diagnosed cases of esophageal cancer in 1999 and 158 controls were investigated by case - control study.
方法：采用病例对照研究方法，对 1999 年 86例新发病例和 158 例对照进行了调查和分析。
Methods Retrospective case-control study.
方法采用回顾性对照研究。
Methods Retrospective case-control study.
方法采用回顾性对照研究。
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