方法：采用前瞻性的随机对照研究。
前瞻性的随机对照研究。
检索到与临床功效和安全性相关的两个随机对照试验(rct)、一个前后对照研究、两个回顾性报告，以及18个药物动力学研究。
Two randomized controlled trials (RCTs), one before-and-after study and two retrospective reports on clinical efficacy and safety were retrieved, together with 18 pharmacokinetic studies.
对比较在家里或在诊所进行药物流产的随机对照试验和前瞻性群组研究进行系统搜索。
A systematic search for randomized controlled trials and prospective cohort studies comparing home-based and clinic-based medical abortion was conducted.
食管手术预防性抗生素使用的随机对照研究。
A randomized controlled trial of preventive antibiotics used for esophageal operations.
作者认同国际上普遍接受的观点：较其它类型的研究设计，随机对照试验对推断干预措施与效应的因果关联，其真实性最强。
The author identified with views that as compared with the research design of other types, RCTs is the most authentic one in the aspect of causality of efficacy and intervention.
设计：随机对照的前瞻性研究。
DESIGN: a randomized controlled prospective study was conducted.
方法符合CCMD - 3诊断标准的精神分裂症住院患者，采用随机对照、开放性研究治疗21天。
Methods: Patients with CCMD-3-diagnosed schizophrenia requiring antipsychotic treatment were randomly assigned to open-label oral quetiapine or haloperidol decanoate for 21days.
纳入的研究为甘露醇治疗不同程度急性创伤性脑损伤的随机对照试验。
Randomised controlled trials of mannitol, in patients with acute traumatic brain injury of any severity.
这是首项研究不同内镜检查对于减少结直肠癌(CRC)死亡率有效性的随机对照试验(rct)。
This is the first randomized controlled trial (RCT) to test the effectiveness of any form of endoscopic screening to reduce mortality from colorectal cancer (CRC).
根据前瞻性研究的要求，本研究对52例神经根型颈椎病患者进行了随机对照观察。
According to requirements of prospective study, this research performed randomized controlled study on 52 patients of Cervical Spondylosis (radiculopathic type).
方法：根据前瞻性研究的要求，本课题对64例腰椎间盘突出症患者进行了随机对照观察。
Methods: According the request of prospective studies, this research observed 64 cases of LDH with randomized and controlled methods.
方法：根据前瞻性研究的要求，本课题对64例腰椎间盘突出症患者进行了随机对照观察。
Methods: According the request of prospective studies, this research observed 64 cases of LDH with randomized and controlled methods.
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