**以下是一个嵌套程序 capture program drop simple program simple //一个简单的程序 version 15 args msg if "msg'"=="hello" { display "you said hello" } else display "you did not say hello" display "good-bye" end set trace on //可以跟踪程序运行 simple hello simple no program myprog2 ...
outreg2 using result_1.doc,append tstat bdec(3) tdec(2) ctitle(ln_w,Full-sample)addtext(Controls, Yes,Year Effect, Yes) keep(did treated*) xtreg ln_w did treated* $xlist i.year if union!=1 ,fe outreg2 using result_1.doc,append tstat bdec(3) tdec(2) ctitle(ln_w,union=0)...
Errors in specifying expressions often result in this message. 199. unrecognized command Stata failed to recognize the command, program, or ado-file name, probably because of a typographical or abbreviation error. 301. last estimates not found You typed an estimation command, such as regress, ...
the mother's education is still not significant.Example 3: Instrumental variables, cross-fit partialing out We found no statistically significant effect of the mother's education when we fit models for birthweight and low birthweight. The mother's education, however, is presumably endogenous. We...
What is interesting is that the analysis of the interaction term and the test for the differences in the simple slopes would indicate two different interpretations of the same dataset; the interaction term was not significant, yet significant differences in the simple slopes were found. If a ...
However, if the results do change appreciably—greater than a relative difference of 10 (1%)—then quadrature is not reliably approximating the likelihood. What can I do to improve my results? If the command indicates that the estimation results are sensitive to the number of quadrature points,...
xtcse2 - Estimation of the exponent of cross-sectional dependence. An introduction into the topic can be found in my slides of the 2021 Stata Economics Virtual Symposium here. Table of Contents Syntax Description Options Econometric and Empirical Model Mean Group Common Correlated Effects Dynamic Co...
does not contain at least one treated and one control unit. 该算法的工作原理如下: 1. 从协变量X开始并制作一个副本,我们将其表示为X*。 2. 根据用户定义的切点或CEM的自动分箱算法粗化X*。 3. 为X*的每个观测值创建一个层,并将每个观测值放入一个层中。 4. 将这些层分配给原始数据X并删除...
display “{text}mpg {c |} {result:21.3}” display “error: variable not found” display “{txt}the variable mpg has mean {res:21.3} in the sample” display “When using the {cmd:summarize} command, specify” display “{cmdab:su:mmarize}[{it:varlist}][{it:weight}][{cmdab:if} ...
R - Using non-integers vs integers: warnings with non, > Error: no valid set of coefficients has been found: please supply starting values In addition: Warning messages: 1: glm.fit: algorithm did not converge 2: glm.fit: fitted rates numerically 0 occurred I have already tried providing ...