四分位数

Compared with the first and second quartile, the osteoporosis prevalence and risk were significantly increased in the women of the third and fourth quartile, and the fourth quartile had a significant higher prevalence and risk than the third quartile, especially in spine.

与一分位数和三分位数比较，四分位数的妇女骨质疏松症患病率和患病风险显著增加；与三分位数比较，处于四分位数的妇女骨质疏松症患病率和患病风险也显著增加，特别是在腰椎。

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）。

The median NIH-SS score and infarct volume for acute stroke patients were 6 (interquartile range : 2 to 13) and 3.4 cc (IQR: 1.1 to 16.6), respectively.

急性脑卒中患者美国国立卫生研究院卒中评分中位数和梗死体分别为6 （四分位数间距：2至13）和3.4毫升（ IQR ：1.1-16.6）。

At catheterization, all patients had elevated intrapericardial pressure (median, 12 mm Hg; interquartile range, 7 to 18) and elevated right atrial and end-diastolic right and left ventricular pressures.

在进行导管插管时，所有病人的心包内压都升高(中位数为 12mmHg，四分位数间距为 7～18mmHg)，右房压以及左室和右室舒张期末压也都升高。

RESULTS: Melatonin significantly reduced the anxiety scores from 5, 3.5-6 to 3, 2-3 after premedication and to 3, 2-3.5 during surgery (P = 0.04 and P = 0.005 compared with the placebo group, respectively).

结果：褪黑素显著降低焦虑评分。给药前中位数及四分位数间距为5， 3.5-6。给药后中位数及四分位数间距为3， 2-3，术中为3， 2-3.5(P=0.04并且和分别和对照组相比 P=0.005)。

The total pregnant women took part in the urine testing of mercury was 2,190. The mean, median, minimum, maximum, 95%CI were 2.58ug/kg, 1.66ug/kg, 0.01ug/kg, 62.07ug/kg, 2.42-2.74ug/kg respectively, and the quarte range was 1.79ug/kg.

孕妇孕期及其新生儿内环境汞暴露现状本次孕妇尿汞检测总计有效2190例，算术平均值为2.58ug/kg，中位数为1.66ug/kg，最小值为0.01ug/kg，最大值为62.07ug/kg，95％CI为2.42-2.74ug/kg，四分位数间距为1.79ug/kg。

After pericardiocentesis, the intrapericardial pressure decreased (median value,–5 mm Hg; interquartile range,–5 to 0), whereas right atrial and end-diastolic right and left 9 ventricular pressures, although slightly reduced, remained elevated, with a dip–plateau morphology.

在心包穿刺后，心包内压力下降(中位数为-5mmHg，四分位数间距为-5～0mmHg)，而右房压及左室和右室舒张期末压虽然有轻微下降但仍然较高，形态上表现为倾角-平台状。

Respondentsreported a median of 2550 deliveries per year (interquartilerange 2000, 4000), with 30% delivered by cesarean delivery(IQR 25.5%, 32.5%) and 5% of cesarean deliveries performed undergeneral anesthesia (IQR 4%, 8%).

受访者报告的中位数为2550次分娩/年（四分位数间距 2000 ， 4000 ），其中30 ％为剖宫产（ IQR 25.5 ％， 32.5 ％），5 ％的剖宫产在全身麻醉下进行（ IQR 4 ％， 8 ％）。

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。