birth rates

The birth cohort death study showed that the later the year of birth the higher the mortality rate was from ovarian cancer and the death rates of population born in about 1945 were the highest.

死亡队列研究发现，出生越晚，死亡率越高，其中1945年前后出生的人群死亡率最高。

Older programs have established live birth rates based on years of experience.

更老方案多年的活胎出生率.

This is not only due to high birth rates, but to lower death rates as well.

这不仅仅是由于出生率高, 而且还由于死亡率低的缘故.

High birth rates were often balanced out by high death rates.

高生育率常被高死亡率抵消。

Treatment choice of ICSI was not associated with fertilization, pregnancy, or live birth rates.

选择ICSI治疗与受精 、 妊娠及出生率并无相关性.

The increased value placed on the idea of the family also helps to explain this rise in birth rates.

不断受到重视的家庭观念也有助于解释出生率的上升。

Analysis of international variations in birth rates

国际间出生率差异分析

Regional Distribution of Birth Rates of Twins in China

中国不同卵性类型双生子出生率的地区分布

Rich countries are at the beginning of a demographic crisis, with birth rates starting to fall below replacement levels.

各个富国正处于人口危机的开端，出生率开始降至更替水平以下。

Even with declining pregnancy rates, the United States still has one of the highest overall birth rates among industrialized countries.

尽管国内怀孕率持续走低，美国依旧是发达国家中出生率最高的国家之一。

It is also important to understand the definitions of pregnancy rates and live birth rates.

解读妊娠率和活胎出生率的定义也是重要的.

In the north of India, the population is booming due to high birth rates, but in the south, where most economic development is taking place, birth rate is falling rapidly ．

在印度北部,出生率高,人口正飞速增长,而在经济发达的南部,出生率正在迅速下降。

Nations were uneasy about their falling birth rates.

一些国家为本国日益下降的人口出生率感到不安。

Out-of-wedlock Birth rates have plateaued for Blacks.

黑人的未婚生育率已经不再增加.

All of these groups continue to have above-average birth rates.

所有这些族群出生率将继续维持在平均数以上。

European birthrates are not that much higher than Asian birth rates either.

欧洲的出生率也并不比亚洲的高多少。

The analysis showed a decline in birth rates for all examined populations in spring of 1919.

分析显示，1919年春季，所有接受调查的人口出生率都有所下降。

The 10 nations with the highest birth rates in the world are all in Africa.

全世界出生率最高的10个国家都在非洲。

It's easy to correct breech birth position by raising the buttocks and lying on one's side, which can reduce greatly the rates of breech birth and perinatal mortality and ensure the health of mother and infant.

抬臀侧卧纠正臀位简单易行，能大大降低臀位发生率，降低围产期婴儿的死亡率，确保母婴的身体健康。

Birth rates must equal death rates, and production rates of commodities must equal depreciation rates.

例如，出生率会等于死亡率，而商品生产率也会等于折旧率。

Maternity services were to be reduced in consequence of falling birth rates.

由于出生率下降，产科服务会随之削减。

Birth rates can rise ( as they just have in Japan for the first time in years) as well as fall.

出生率既可能上升（正如日本多年来首次出现的情况），也可能下降。

Region-specific multiple regression models were used to estimate the preterm birth rates for countries with no data.

使用特定地区的多元回归模型来估计无相关数据国家的早产率。

Birth rates are notoriously difficult to predict.

众所周知,出生率是很难预测的.

As birth rates remain low, many workplaces including hospitals are chronically short-staffed.

因为日本出生率一直都很低，包括医院在内的许多工作场所都是长期缺人。

The birth cohort study had some inter-esting findings, the later the year of birth, the higher the mortality rates from both malignancies in later life.

出生队列研究发现，出生越晚，死亡率越高，这是两者的共同特点；

Poverty and illiteracy go together with high birth rates.

贫困、文盲与高出生率密切相关。

The influence of maternal ages on the birth rates of twins in China

母亲年龄对中国双生子出生率的影响

Russia also has low birth rates.

俄罗斯同样只有较低的出生率。

Along with education, income and health care, the decline in birth rates correlates closely with urbanization.

教育、收入与卫生保健的改善，以及出生率的下降，都与城市化息息相关。