regressiondilution bias是什么意思

Regression dilution bias，attenuation bias
回归稀释偏差，衰减偏差
The variation of the fundamental wave attenuation with the external bias stress and the influence of the fundamental wave amplitude on the second and third harmonics have also been observed.
我们也测量了基波衰减随外应力的变化及二次谐波、三次谐波与基波振幅的关系，对二次谐波随外应力变化的温度效应也作了研究。

日语为 因果関系希釈バイアス
可以翻译成 因果稀释偏差 因果削弱偏差
The gist [of regression dilution bias] is that if an association between two variables--such as salt and blood pressure--is real, any errors in measuring exposure to either variable will only serve to "dilute" the apparent cause and effect
如果两个变量之间的联系-如盐和血压确实存在，对任何1变量的错误测量都会减弱的其因果联系的外在表现

这个词一般多用在医学上 尤其是心血管的 比如血压的测量 常用的还有白大衣效应 white coat effect 观察者偏差observer bias