归因危险度或率差 （1）定义：归因危险度（attributable risk，AR）或率差（rate difference）是指暴露组发病率与非暴露组发病率之差，它反映发病归因于暴露因素的程度。
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...量就是两者的2年无进展生存率、5年无进展生存率、2年总生存 率、5年总生存率和各种毒副反应率的差值，即率差（risk difference，RD），反 映治疗优势。
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工资率差异 Labor Rate Variance ; wage rate variance ; rate variance ; hour rate variance
利率差距 interest spread ; spread ; interest rate spread
汇率差 erd
利率差额 interest rate differential
折射率差 refractivity ; refringence ; refractivities ; Refractive index difference
频率差 [电子] frequency difference ; difference, frequency ; DFO-differential frequency offset ; difference of frequency
汇率差额 difference in exchange rate ; [金融] exchange rate differential
税率差距 duty differential
效率差异 [审计] efficiency variance ; efficiency difference
两个国家都以欧元借债，中间的率差是投资者对爱尔兰信用风险评估的参照。
Both countries borrow in euros, so the gap is a rough guide to how creditworthy investors consider Ireland to be.
西班牙的债券收益率已经下降，跟德国债券收益率的率差也已缩小， 已跟葡萄牙拉出了距离。
Spain, whose bond yields have fallen and whose spreads with Germany have tightened, has distanced itself from Portugal.
由于这个额外的需求，名义与关联通胀债券的收益率差被缩小了，同时拉低了其反映的通胀率。
That extra demand squeezes the spread over inflation-linked bonds, bringing down the implied inflation rate.
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