That is likely to lead to a significant statistical bias.
但是这么做很可能会导致统计偏差太大。
Given data which are free from bias there are further snares to avoid in statistical work.
就算这些数据不带任何偏见，但是统计工作中还有许多需要避免的陷阱。
Studies that ask people to describe past behaviour are vulnerable to a well-known statistical phenomenon called recall bias.
这项研究还有一个缺陷，它只是让被调查者回忆她们在过去是否有服食维生素药物。 而让被调查者描述过去的行为，很容易使研究受到大家所熟知的统计现象“记忆偏差”的影响。
Conclusion The principles and methods for observational studies should be followed to reduce information bias, selection bias and confounding bias in statistical analysis of hospital data.
结论在对医院资料进行统计分析时，应遵循观察性研究的原则和方法，以避免可能存在的信息偏倚、选择偏倚和混杂偏倚。
The aim of this methodology review was to assess whether the time taken to publish the results of clinical trials is influenced by the statistical significance of their results (time-lag bias).
本篇方法学回顾的目标，在评估临床试验出版所需的时间是否受到其试验结果的影响（时间差的偏差）。
The aim of this methodology review was to assess whether the time taken to publish the results of clinical trials is influenced by the statistical significance of their results (time-lag bias).
本篇方法学回顾的目标，在评估临床试验出版所需的时间是否受到其试验结果的影响（时间差的偏差）。
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