第一四分位数

When the threshold for the logistic model was set at the first quartile, this resulted in a sensitivity of 86% for detecting all stroke and a sensitivity of 94% for detecting hemorrhagic stroke.

当Logistic模型的界值设定为第一个四分位数时，结果显示检测出所有卒中的敏感度为86%，而对出血性卒中则为94%。

The age- and sex-adjusted hazard ratios for diabetes were 1.30, 1.63, and 2.83 for the second, third, and fourth quartiles of serum uric acid, in comparison with the first quartile.

研究人员报道：在年龄和性别做了相应调整后与第一次血清尿酸四分位数相比较，第二次糖尿病的危害比为1.30，第三次为1.63，第四次为2.83，。

In adjusted models, NRG-1β was independently associated with an increased risk of death or cardiac transplantation over a median follow-up of 2.4 years (adjusted hazard ratio, 1.58; 95% confidence interval, 1.04 to 2.39; P=0.03 comparing fourth versus first NRG-1β quartile).

在校正的模型中，NRG-1β与死亡风险增加或心脏移植独立相关（平均随访2.4年，NRG-1β第四分位数与第一分位数相比，校正的风险比为1.58；95% CI，1.04~2.39；P=0.03）。

There are no tables for children so Raghuveer and colleagues arbitrarily designated advanced childhood vascular age as having a thickness above the first quartile for a child matched to a 45-year-old in the table by sex and race.

因为尚无儿童图表，Raghuveer医师和同伴将儿童期血管年龄根据种族和性别与45岁人群相匹配，确定颈动脉内膜中膜厚度超过其第一四分位数。

The adjusted population-attributable risk of AMI for the top 3 quartiles compared with the bottom quartile of the dietary risk score was 30%.

与饮食危险评分的第一四分位数相比，后三个四分位数的AMI校正人群归因危险为30％。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。