meta regression 什么意思

meta regression 什么意思
麻烦高手翻译下这句话: We used fractional polynomials in a meta-regression to determine the dose-response relationships by sex and end point using lifetime abstainers as the reference group.
to determine the dose-response relationships by sex and end point 应该是 按性别和终点决定剂量反应关系
using lifetime abstainers as the reference group 应该是 将终身戒烟者作为对照组
不过以上都是专业方面的东西,谢谢大家,至少我知道mata-regression是什么了:)