摘要: 指机体偏离机体自身稳态的程度。非稳态负荷可使机体通过调整达到稳态。[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: pmsampsize computes the minimum sample size required for the development of a new multivariable pre[阅读全文]

摘要: brain is a no-frills implementation of a backpropagation algorithm in Mata designed for a hassle fr[阅读全文]

摘要: Stata module to produce Mean Comparison for many variables between two groups with formatted table ou[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: 留守儿童，是指父母双方外出务工、一方外出务工另一方无监护能力或者父母因其他原因外出不能履行监护职责，不满十六周岁的未成年人。[阅读全文]

摘要: countmatch counts observations for which each distinct value of var1 is  matched by (is equal to[阅读全文]

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

摘要: -colorscatter- draws (twoway) scatterplots allowing to vary the marker color by a third varaible. T[阅读全文]

摘要: SciMan（网址sciman.org）是一个科研工作者交流的社区。[阅读全文]

摘要: Adrian Mander’s ipf command (iterative proportional fitting)[阅读全文]

摘要: multishell allows the efficient processing of loops and multiple do files across a single and multipl[阅读全文]

摘要: asdoc sends Stata output to Word / RTF format. asdoc creates high-quality, publication-ready tables[阅读全文]

摘要: 2006年，纪念斯隆凯特琳癌症研究所的AndrewVickers博士等人研究出另一种评价方法，叫决策曲线分析法（Decision Curve Analysis，DCA）。定义：Decision curv[阅读全文]

摘要: 氢化（hydrogenation）：将不饱和脂肪酸的不饱和双键与氢结合变成饱和建，随着饱和程度的增加，油类可由液态变为固态，这一过程称为氢化。[阅读全文]

摘要: 必要的氮损失（obligatory nitrogen losses,ONL）：机体每天由于皮肤、毛发和粘膜的脱落，妇女月经期的失血及肠道菌体死亡排出等损失约20g以上的蛋白质，这种氮排出是机体不可避免的[阅读全文]

摘要: 益生元：是指不被人体消化系统消化和吸收，能够选择性地促进宿主肠道内原有的一种或几种有益细菌（益生菌）生长繁殖的物质，通过有益菌的繁殖增多，抑制有害细菌生长，从而达到调整肠道菌群，促进机体健康的目的。[阅读全文]

摘要: 毕托斑（Bitot”s spots）：为贴近角膜两侧和结膜外侧因干燥而出现褶皱，角膜上皮堆积，形成大小不等的形状似泡沫的白斑。[阅读全文]

摘要: 食物成分数据库（food composition databace,FCD）：是一个国家和地区重要的公共卫生数据，农作物、水产和禽肉类等是人类赖以生存的基本食物，准确而详细的描述其基本特性、营养素和非营[阅读全文]