更改

RCTs are considered to be the most reliable form of scientific evidence in the hierarchy of evidence that influences healthcare policy and practice because RCTs reduce spurious causality and bias. Results of RCTs may be combined in systematic reviews which are increasingly being used in the conduct of evidence-based practice. Some examples of scientific organizations' considering RCTs or systematic reviews of RCTs to be the highest-quality evidence available are:

RCTs are considered to be the most reliable form of scientific evidence in the hierarchy of evidence that influences healthcare policy and practice because RCTs reduce spurious causality and bias. Results of RCTs may be combined in systematic reviews which are increasingly being used in the conduct of evidence-based practice. Some examples of scientific organizations' considering RCTs or systematic reviews of RCTs to be the highest-quality evidence available are:

在影响医疗政策和实践的证据层次中，随机对照试验被认为是最可靠的科学证据形式，因为它减少了虚假的因果关系和偏见。随机对照试验的结果可以结合进行系统评价，这种评价正越来越多地用于循证实践的操作。一些科学组织认为区域研究报告或对区域研究报告的系统审查是现有的最高质量证据的例子如下:

在影响医疗政策和实践的证据层次中，随机对照试验被认为是最可靠的科学证据形式，因为它减少了虚假的因果关系和偏差。随机对照试验的结果可以结合进行系统评价，这种评价正越来越多地用于循证实践的操作。一些科学组织认为区域研究报告或对区域研究报告的系统审查是现有的最高质量证据的例子如下:

==== Adaptive ====

==== Adaptive ====