夏目贵志 发表于 2016-8-1 04:30 
wiki上说的还是比较清楚的。可以参考https://en.wikipedia.org/wiki/Regression_dilution
大致意思就是你的 ...
谢谢夏目贵志老师,但文章说“adjustment for regression dilution bias”,
不是调整过的意思吗?
原文是“We examined the association
between an estimated so-called usual level of sodium
excretion (ie, accounting for the degree of correlation
between sodium levels in urine when measured after
30 days and 90 days in 448 individuals; this also allows
adjustment for regression dilution bias)26 and blood
pressure. Analysis of covariance was done, with tests for
linear trend, to compare the adjusted mean blood
pressure according to sodium excretion level.”