R语言 Sleuth2包 case0501()函数中文帮助文档(中英文对照)

loveR

case0501(Sleuth2)
case0501()所属R语言包：Sleuth2

                                        Diet Restriction and Longevity
                                         限食长寿

                                         译者：生物统计家园网 机器人LoveR

描述----------Description----------

Female mice were randomly assigned to six treatment groups to investigate whether restricting dietary intake increases life expectancy. Diet treatments were:  <ol> "NP"&mdash;mice ate unlimited amount of nonpurified, standard diet
雌性小鼠，随机分为6个组，以调查是否限制饮食摄入量增加寿命。饮食治疗：<OL> "NP"老鼠吃无限量的nonpurified，标准饮食

"N/N85"&mdash;mice fed normally before and after weaning. After weaning, ration was controlled at 85 kcal/wk
"N/N85"-断奶前后小鼠喂正常。断奶后，定量控制在85千卡/周

"N/R50"&mdash;normal diet before weaning and reduced calorie diet (50 kcal/wk) after weaning
"N/R50"正常饮食断奶前和低卡路里的饮食（50千卡/周），断奶后

"R/R50"&mdash;reduced calorie diet of 50 kcal/wk both before and after weaning
"R/R50"-50千卡/周减少热量的饮食断奶前后

"N/R50 lopro"&mdash;normal diet before weaning, restricted diet (50 kcal/wk) after weaning and dietary protein content decreased with advancing age
"N/R50 lopro"正常的饮食断奶前，限制饮食（50千卡/周），断奶后饲料中蛋白质含量下降随着年龄的增长

"N/R40"&mdash;normal diet before weaning and reduced diet (40 Kcal/wk) after weaning. </ol>
"N/R40"正常的饮食断奶前和减少断奶后的饮食（40千卡/周）。 </ OL>


用法----------Usage----------


case0501



格式----------Format----------

A data frame with 349 observations on the following 2 variables.   
349观察以下2个变量的数据框。

Lifetimethe lifetime of the mice (in months)
Lifetime的老鼠的寿命（月）

Dietfactor variable with six levels&mdash;"NP", "N/N85", "lopro", "N/R50", "R/R50" and "N/R40"   
Diet因子变量与六个级别"NP"，"N/N85"，"lopro"，"N/R50"，"R/R50"和"N/R40"


源----------Source----------

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
拉姆齐，F.L.和Schafer，D.W. （2002年）。的统计的猎犬：A课程方法的数据分析（第二版），达克斯伯里。


参考文献----------References----------

Weindruch, R., Walford, R.L., Fligiel, S. and Guthrie D. (1986). The Retardation of Aging in Mice by Dietary Restriction: Longevity, Cancer, Immunity and Lifetime Energy Intake, Journal of Nutrition 116(4):641&ndash;54.

实例----------Examples----------


str(case0501)
boxplot(Lifetime~Diet, width=c(rep(.8,6)), data=case0501,
        xlab="Diet", ylab="Lifetime in months")
summary(subset(case0501, Diet=="NP", Lifetime))

转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。


注：
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