摘要:Abstract Many infectious agents, especially those that cause emerging diseases, infect more than one[阅读全文]

摘要:RDS: Stata module for respondent driven samplingRespondent-driven sampling is a technique to sample n[阅读全文]

摘要:安装ssc install runby更新ssc install runby, replacerunby loops over data by-groups. A by-group is a sub[阅读全文]

摘要:rangestat -- Generate statistics using observations within rangeclearinput id1 id2  1 &nbsp[阅读全文]

摘要:rangerun runs a user-supplied Stata program for each observation in the sample. At each pass, the dat[阅读全文]

摘要:reghdfe 有效解决数据众多时加入固定效应的问题 Linear and instrumental-variable/GMM regression absorbing multiple le[阅读全文]

摘要:RECAP: Stata module to perform capture-recapture analysis for three sources with Goodness-of-Fit base[阅读全文]

摘要:rcentile是为百分数计算稳健的可信区间的Stata第三方命令，作者为Roger Newson。命令安装ssc install rcentile命令简介rcentile calculate[阅读全文]

摘要:relogit是实现稀有事件logistic回归的一个第三方命令，作者为Michael Tomz, Gary King, Langche Zeng。[阅读全文]

摘要:rollreg处理的数据为时间序列数据（time-series data），因此使用前必须使用tsset命令声明数据。[阅读全文]

摘要:队列研究的指标[阅读全文]

摘要:一般,若总体中的个体可按两个属性A与B分类，A有r个等级A1,A2,…，Ar；B有с个等级B1,B2,…，Bc,从总体中抽取大小为n的样本设其中有nij个属于等级Ai和Bj，nij称为频数，将r×с个n[阅读全文]

摘要:定义：研究RNA组的学科，主要是直接鉴定生物体中非信使小RNA(snmRNA)在特定条件和不同状态下的种类、功能、差异及其与蛋白质的相互作用，是基因组学和蛋白质组学研究的扩充、发展和延伸。[阅读全文]

摘要:Randomization refers to random sampling,random allocation and random test sequence.[阅读全文]

摘要:RR is the most common measure for the association between esposure and outcome.The meaning is how man[阅读全文]

摘要:RNA聚合酶（RNA polymerase）:以一条DNA链或RNA为模板催化由核苷-5′-三磷酸合成RNA的酶。是催化以DNA为模板（template）、三磷酸核糖核苷为底物、通过磷酸二酯键而聚合的合[阅读全文]

摘要:RNA病毒是生物病毒的一种，属于一级。 它们的遗传物质是有核糖核酸组成（RNA ribonucleic acid），通常核酸是单链的(ssRNA single-stranded RNA),也有双链的（d[阅读全文]

摘要:受试者工作特征曲线 （receiver operating characteristic curve，简称ROC曲线），又称为感受性曲线（sensitivity curve）。得此名的原因在于曲线上各点[阅读全文]

摘要:Residual confounding refers to confounding that has been incompletely controlled, so that confounding[阅读全文]

摘要: RStudio is a new open-source IDE for R which we’re[阅读全文]