在小样本研究中，尽管采用了随机法，但两组间偏倚还是很容易发生的。
In studies with small sample sizes, imbalances between the two groups can easily occur despite randomisation .
Huang提醒说，这些只是小样本研究的初步结果，为更进一步了解LDL水平与帕金森病的关系，还需要做更大样本的前瞻性研究。
Huang cautioned that these are preliminary results from a small study and that larger, prospective studies are needed to learn more about the association between LDL levels and Parkinson's disease.
我个人在斯坦福青少年研究中心的研究采用的是对小样本的青少年进行深入访谈的方式，而不是大规模的调查。
My own research at the Stanford Center on Adolescence uses in-depth interviews with small samples of youngsters rather than large-scale surveys.
应用推荐