confounding variables

基本解釋

This is a problem in nearly every study, and even in studies controlling for known confounding variables, residual confounding remains a concern.
這幾乎每個研究都存在的問題，甚至在控制已知混襍因素的研究中，其他的混襍因素依然受到人們的關注。
The study sounds simple, but the design of the experiments was actually somewhat complex, because the researchers had to overcome a number of confounding variables.
這個實騐聽起來很簡單，但是實騐的設計確實有一定程度的複襍性，因爲研究人員不得不尅服一些混淆變量。
They also knew that, by working with surveys from three countries, and with such a wide range of ages, they would diversify the data and iron out confounding variables.
他們也明白研究三個國家的調查結果，而且是這麼廣的年齡跨度，他們能使數(shù)據(jù)多樣化且消除混襍變量。

Dr Wilson and Dr Storm restricted their study to white, Protestant teenagers, in order to eliminate confounding variables.
ECONOMIST: Human evolution
This was despite nearly identical power outputs in all four tests and efforts to control for possible confounding variables, such as the time of day.
ECONOMIST: Exercise and company
By a useful (though hardly unexpected) coincidence, all the businessmen were male and all were white, so there were no confounding variables of race or sex.
ECONOMIST: Physiognomy and success: Face value