分位数

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。

This paper calculates intra-industry trade about the 9 high-technology industries at the 6 digit HS level, the vertical and horizontal ultra-industry trade using the Greenaway method further. The term of trade and income term of trade are also calculated.

依据中国海关对高新技术产业的分类，基于HS六分位数对我国高新技术九大领域的产业内贸易进行测算，并采用Greenaway方法进一步测算出高新技术产业水平型产业内贸易和垂直产业内贸易，我国高新技术的净贸易条件和收入贸易条件。

Arterial Lp-PLA2 leels were similar in patients and control subjects: 225 ng/mL (interquartile range , 196 to 273 ng/mL) ersus 221 ng/mL (IQR, 177 to 294 ng/mL).

动脉脂联磷脂酶A2水平在病例组和对照组之间相似225 ng/mL（四分位数间距为196 ng/mL 至 273 ng/mL）对221 ng/mL（IQR为177 至 294 ng/mL）。

This female excess was found across countries with widely differing myocardial infarction mortality rates in women (interquartile range 12.7 to 126.5 per 100 000), was particularly high in the American studies (1.40, 95% CI 1.28 to 1.52), and was higher among nonwhite ethnic groups than among whites.

这种女性患病率稍高的情况在心肌梗死死亡率不同的国家均被发现（四分位数间距12.7-126.5/100 000），在美国女性中尤其高(1.40， 95% CI＝1.28－1.52)，且在非白人女性中高于白人女性。

The JHU researchers prospectively examined changes in fibrosis stage between paired liver biopsies in 67 coinfected patients. Of the 67 subjects, six were excluded due to cirrhosis on the first biopsy. The median age of group was 44 years, and 75% of the subjects were men. A total of 86% had CD4+ cell counts of less than 200 cells/mm3, and the same number of subjects were receiving antiretroviral therapy. Twenty-seven percent of the patients abused alcohol. The median time between biopsies was 2.84 years (interquartile range, 2.05 - 3.41 years).

JHU研究人员前瞻性地检验67位共同感染病患成对肝脏切片的纤维化严重度变化，在67位受试者中，6位因在第1次肝脏切片时就已经是肝硬化而被排除；受试者平均年龄为44岁，而且75%的受试者为男性；86%患者的CD4+细胞计数低於200 cellsmm3，而且同样数目的受试者接受抗反转录病毒药物治疗；27位病患有酗酒的习惯；切片之间的平均时间为2.84年（四分位数中距为2.05－3.41年）。

Children in the lowest RC-DQI quartile scored lower in all components.

RC-DQI四分位数最低的儿童在所有分项得分都低。

Standard nonparametric tests and confidence intervals for continuous and categorical data; nonparametric estimation of quantiles; robust estimation of location and scale parameters.

非参数和稳健方法：连续和类别数据的标准非参数检验和置信区间，分位数的非参数估计，阶和位置参数的稳健估计，传统方法的效果比较。

Just as with t statistics, p-values can be calculated by looking up the percentile in the appropriate F distribution

和t 统计量一样，p值可以通过计算适当的F分布的分位数得到。

The upper quartile is that value above which 25 per cent of the observations lie.

上四分位数是25％的观察值位于其上的值。

There was a modest, nearly significant 30% reduction in breast cancer risk for women in the highest quartile of lignan intake.

Ziegler注意到这个研究方法的长处和其局限性，在木酚素摄取的最高四分位数中的妇女几乎可减少显著的30%罹患乳癌的风险。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。