Study types and bias—Don't judge a study by the abstract's conclusion alone

[摘要] Not all study designs are created equal. Some designs are inherently better at minimizing bias. Bias (usually unintended) is one of the greatest threats to a study's conclusion. In this issue of EBSJ, we will discuss the strengths and weaknesses of the common study designs that you are most likely to encounter in the literature or consider for your next study.

[学科分类] 外科医学