. egen newid = group(oldid) The new variablenewidwill contain 1 for the first value ofoldid, 2 for the second value, and so on. Answer 2. To create a new variablenewidfrom the existing variableoldid, whetheroldidis string or numeric, type ...
replace***usedata_submit,cleargenergy_int=exp(lenergy_int)collapse(mean)energy_int,by(yearcityid)keepifyear==1998rencityid市代码merge1:m市代码usingchinacity40_db.dtaren市代码cityid***ggroup=substr(string(cityid),1,2)bysgroup:egenmean=mean(energy_int)replaceenergy_int=meanifmissing(energy...
How can I compare indirect effects in a multiple group model? (Stata 12) How can I do mediation analysis with the sem command? (Stata 12) How can I perform mediation with multilevel data? (Method 2) How can I perform mediation with multilevel data? (Method 1) How can I perform media...
我们可以使用异构DID模型来解释潜在的效果差异。 新命令hdidregress和xthdidregression适用于异构DID模型。hdidregress处理重复的横截面数据,xthdidregression处理纵向/面板数据。 异构DID在最近世界各地的许多Stata会议上都是一个热门话题。现有的很多用户都对此感兴趣。 5. Group sequential designs (GSDs) GSDs是一种适...
arrowplotModule to produce combined plot for graphing inter-group and intra-group trends asciiModule to display the ASCII character set asciiplot asl_norm assertky autofmt autolog autorenameModule to automatically rename variables avarmodule to perform asymptotic covariance estimation for iid and non-ii...
2023年4月25日，StataCorp LLC 正式宣布 Stata 18 上线啦！Stata18很多功能都有大的更新或者功能扩展，具体更新主要包括!以下方面:1. Bayesian model averaging；2. Causal mediation analysis；3. Tables of descriptive statistics；4. Heterogeneous DID；5. Group sequential designs；6. Multilevel meta-analysis；...
语法:group_indices(.data, …) 返回分组后,每条记录的分组id。 举例4: #返回每条记录所在分组id组成的向量 group_indices(mtcars, cyl) 语法:group_size(x) n_groups(x) group_size用于返回每个分组的记录数,n_groups返回分成的组数。 举例5: by_cyl <- group_by(mtcars, cyl) ...
groupID(statefip) /// subexpVar(sub_exp) * Summarize by sub_exp:sum stack_weight if treat == 0 & event_time == 0 得到权重后,我们可以利用堆叠数据集来跑堆叠回归,得到总的ACA处理效应: // Estimate the stacked regression // Create dummy variables for event-time ...
Data management: How do I create variables summarizing for each individual properties of the other members of a group? (Added 22 May 2001) Statistics: I am only interested in obtaining a few of the marginal effects for a few independent variables. How can I do that? (Added 21 May 2001...
Stata图书推荐｜Create and Export Tables Using Stata 在《Create and Export Tables Using Stata》一书中，Michael Mitchell将教您如何熟练地制作自定义的、具有出版质量的汇总统计表、回归结果等。Mitchell查阅了数百篇来自多个学科的已发表期刊论文，寻找常用的表格布局。本书通过使用Stata的table、dtable和etable命令...