它是上四分位数与下四分位数之间的差异。

It is the difference between the upper and lower quartiles.

youdao

用其他三个四分位数联合作为对照，通过每个营养素的下四分位数计算出优势比(ORs)。

Odds ratios (ORs) were calculated for the lowest quartile of each nutrient using the other 3 quartiles combined as the reference group.

youdao

用其他三个四分位数联合作为对照，通过每个营养素的下四分位数计算出优势比(ORs)。

Odds ratios (ORs) were calculated for the lowest quartile of each nutrient using the other 3 quartiles combined as the reference group.

youdao