The only way to sort out cause and effect is to do a randomized trial, moving people around between neighborhoods and tracking their health over several years.
要想找出原因，唯一的方案就是进行随机实验，让人们住进不同的社区，并在几年内坚持跟踪他们的健康状况。
The manuscript is a randomized trial, registered in the NLM database as NCT00931554.
这是一项随机试验，在NLM数据库中注册号为NCT00931554。
The prevention of hip displacement has not been studied in a randomized trial as far as we know.
据我们所知，到目前为止还没有一个随机试验用来研究预防髋关节脱位。
The only way to know the balance of benefit and harm is a randomized trial, and 2 are currently underway.
唯一能衡量其利弊的是通过随机对照实验，有2个实验正在进行中。
Gleicher is now trying to get funding for a randomized trial to compare the two approaches.
现在格莱·谢尔医生正尝试为一项比较这两种方案的随机性实验筹集资金。
We conducted a randomized trial that compared radiotherapy and supportive care with supportive care alone in such patients.
我们设计了随机临床试验，比较研究对此类病人采用放疗加支持疗法与单独采用支持疗法的区别。
Methods: We conducted a randomized trial of 320 patients with acute ST-segment elevation myocardial infarction assigned to receive SES or BMS.
方法：我们对320名因患有急性ST段抬高型心肌梗塞而接受SES或BMS治疗的病人进行了随机对照研究。
The VA has funded a randomized trial to test whether an automated surveillance system of triggers can improve timely diagnosis and follow-up for five common cancers.
退伍军人事务部资助了一个随机试验，测试“触发”自动化监测系统是否能改善五种常见癌症的及时诊断和跟进。
Ehrenfeld JM et al. Continuous Non-invasive Hemoglobin Monitoring during Orthopedia Surgery: a Randomized Trial.
骨科手术期间的连续非侵入式血红蛋白监测：随机试验。
Ehrenfeld JM et al. Continuous Non-invasive Hemoglobin Monitoring during Orthopedic Surgery: a Randomized Trial.
骨科手术期间的连续无创血红蛋白监测：随机试验。
Ehrenfeld JM et al. Continuous Non-invasive Hemoglobin Monitoring during Orthopedia Surgery: a Randomized Trial.
骨科手术期间的连续无创血红蛋白监测：随机试验。
Each of the studies was a "randomized" trial, meaning participants and doctors didn't get to choose which treatment the patients got; instead, the assignments were made by chance.
每项研究都是随机的，参与者和医生对患者的治疗方法不做选择，随机分配。
Each of the studies was a "randomized" trial, meaning participants and doctors didn't get to choose which treatment the patients got; instead, the assignments were made by chance.
每项研究都是随机的，参与者和医生对患者的治疗方法不做选择，随机分配。
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