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age period
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  年龄阶段
    In addition,the effect of sex on ΣQRS amplitude was greater than age in all age period.
    在各年龄阶段,性别对ΣQRS振幅影响作用> 年龄。
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  “age period”译为未确定词的双语例句
    Age period cohort model is widely used by epidemiologists to analyse trends of chronic diseases. The statistical model provides a useful modification for traditional descriptive epidemiology.
    年龄 时期 队列模型广泛应用于描述性流行病学来分析慢性病发病率和死亡率变化趋势 ,它改进了传统的疾病描述性分析方法。
短句来源
    But parameters of age,period and cohort are not uniquely estimable because of the exact linear dependency among the three variables,so many approaches have been proposed.
    然而模型的三因素间存在着完全线性依赖性 ,使参数不能得出唯一的估计值 ,许多学者提出了各种方法加以解决。
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  age period
A major finding indicates that boysrestrict emotional expression from early adolescence through late adolescence, while girls increaseemotional expression during the same age period.
      
As expected, as children reached formal school age they had increased contact with peers and decreased contact with kin, while adult contact remained fairly consistent over the three- to six-year age period.
      
Consistent with brain maturation models, sensation seeking rose during the age period under study with girls peaking earlier than boys.
      
The activation of the endocrine function of the gonads during this period is more pronounced in animals in the second year of life.3.At 14-16 months of age (period of reproduction of sable), the endocrine function of the ovaries is increased.
      
Results indicate that while time spent talking to friends increased dramatically across this age period, especially for girls, talk with family members remained stable.
      
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Objective To investigate the total 12-lead QRS amplitude(ΣQRS amplitude,10mm=1mV) and the correlation with age and sex.Methods Mean value and probability of 95 percent of the ΣQRS amplitude deriving from 4322 subjects aged from birth to 85 years were calculated and analyzed and correlation with age and sex was analyzed.Results ΣQRS amplitude was the most high in infancy,and it was decreased with advancing age.ΣQRS amplitude was greater in girl infant than that in boy infant,and in children and adults,and...

Objective To investigate the total 12-lead QRS amplitude(ΣQRS amplitude,10mm=1mV) and the correlation with age and sex.Methods Mean value and probability of 95 percent of the ΣQRS amplitude deriving from 4322 subjects aged from birth to 85 years were calculated and analyzed and correlation with age and sex was analyzed.Results ΣQRS amplitude was the most high in infancy,and it was decreased with advancing age.ΣQRS amplitude was greater in girl infant than that in boy infant,and in children and adults,and it was greater in men than in women.In puberty,the correlation of ΣQRS amplitude with age was remarkable in men.In puberty and youth-middle period,correlation of ΣQRS amplitude with sex was very remarkable.In addition,the effect of sex on ΣQRS amplitude was greater than age in all age period.Compared with the Western,Chinese ΣQRS amplitude was increased.Conclusion There are obvious differences of ΣQRS amplitude among ages,among sexes and among races.Therefore,diagnostic criteria of ΣQRS amplitude must be stratified by age,sex and race.

目的 探讨ΣQRS振幅及与年龄和性别的相关。方法 4322 例出生到85 岁不同年龄和性别心电图QRS波,分组统计和比较ΣQRS振幅的平均值及95% 概率范围,分组进行单因素和多因素相关分析。结果 ΣQRS振幅在婴儿期最高,随增龄而递减。婴儿期ΣQRS振幅女婴> 男婴,儿童及成人为男性>女性。在青春期女性ΣQRS振幅与年龄相关明显,在青年期男性ΣQRS与年龄相关明显;在青春期及青、中年阶段ΣQRS振幅与性别相关明显。在各年龄阶段,性别对ΣQRS振幅影响作用> 年龄。与欧美资料比较,中国人ΣQRS振幅> 欧美人。结论 ΣQRS振幅有明显的年龄、性别和种族差异,临床诊断务须根据年龄、性别和种族分别制定诊断标准。

Objective To study the normal reference value of adult tibial speed of sound (tibia SOS)in Bei-jing region.Methods 951normal volunteers(male/femal=4 61/490)were included in this study.Spe-ed of sound were mearsured in the middle of tibia by ultrasound scan(Sound Scan2000,Myrid,Ise-real).Accor ding to their gender and age,all subjects were divided into different subgroup by10year-age period.Results The peak value of SOS presented in30-39years period in both male and female.The peak value was...

Objective To study the normal reference value of adult tibial speed of sound (tibia SOS)in Bei-jing region.Methods 951normal volunteers(male/femal=4 61/490)were included in this study.Spe-ed of sound were mearsured in the middle of tibia by ultrasound scan(Sound Scan2000,Myrid,Ise-real).Accor ding to their gender and age,all subjects were divided into different subgroup by10year-age period.Results The peak value of SOS presented in30-39years period in both male and female.The peak value was higher in males than in fema les.After reach the peak value,the tibial SOS begin to decline.The decreasing rate was fast in SOS were found at50~59period in female and over50~59 years old in male.The tibia values of SOS of postmenopaual was obviously lower than that of pre-menopausal women.The relationship of menopausal duration and t he values if tibial SOS was found to be a non-linear curve,which included3stag es:the quick decrease,stabilization and further decrease.Conclusion The tibia values of SOS provides a kind of meaningful diagnostic criteria of osteoporosi s.

目的初步建立北京健康人群的胫骨骨超声速率Tibiaspeedofsound,TibiaSOS的正常参考值。方法用以色列Myriad公司生产的SoundScan2000型胫骨超声测定仪,对951名北京地区的健康志愿者(男性461名女性490名)进行胫骨SOS的测定按不同性别,以十岁为界,80岁以上合并为1组,男女各分7组。结果男女胫骨SOS在30~39岁年龄组达到峰值,之后男女均开始下降,50岁以后女性下降速度比男性快。妇女绝经前后的胫骨SOS差异显著;胫骨SOS随绝经年限的增加而下降,但下降速度是非线性的,可分为:快速下降期、稳定期和再下降期。结论胫骨SOS的测定是诊断骨质疏松症的一种可行的方法。

Age period cohort model is widely used by epidemiologists to analyse trends of chronic diseases.The statistical model provides a useful modification for traditional descriptive epidemiology.But parameters of age,period and cohort are not uniquely estimable because of the exact linear dependency among the three variables,so many approaches have been proposed.Some of the common models and the approaches to the problem based on parameter estimate were review in this paper.

年龄 时期 队列模型广泛应用于描述性流行病学来分析慢性病发病率和死亡率变化趋势 ,它改进了传统的疾病描述性分析方法。然而模型的三因素间存在着完全线性依赖性 ,使参数不能得出唯一的估计值 ,许多学者提出了各种方法加以解决。现对近些年来国内外学者提出的年龄 时期 队列模型及其参数估计中线性依赖性问题的解决方法进行综述。

 
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