However, given the small sample size and limited nature of the population studied, naturally these results should be taken with a grain of salt until replicated by other researchers.

但因研究对象范围小以及研究对象的局限性，在有其他研究者进行此研究前，对此研究结果应持谨慎态度。

youdao

The main approach to solve this problem is to stratify the population studied through taking the confounder as the stratifying variable.

解决这一问题的主要方法是将混杂因子作为分层变量把被研究群体分层。

youdao

Mister Miller studied cities with a population of over two hundred fifty thousand.

VOA: special.2009.03.27

We could have gone on and studied the average at-risk population for decades and centuries.

我们本可以继续研究几百年来的,平均受危人群。

哈佛公开课 - 幸福课课程节选

How common is it in the general population, beyond the population of studied athletes?

FORBES: Is Football Giving Me Brain Damage? New Scan Opens Door to Self-Testing

Although the Tamiflu-resistant strain is still relatively rare, affecting about 2% of people with swine flu in the Australian population that they studied, Dr Hurt is concerned that it has the potential to turn global.

BBC: Drug-resistant pandemic swine flu 'community risk'

The Finnish researchers studied a population of people, called Sami, who lived in northern Scandinavia from the 17th to the 19th centuries.

BBC: The secret of a longer life?