Yit∗=c+β1Ti+β2Postt+β3Ti×Postt+β4f(Ci)+β5Xit′+αi+Statei+Yeart+εitYit=max(0,Yit∗)αi∣Xit∼Normal(0,σα2)εit∣Xit∼Normal(0,σε2) Y⁎is modeled as a latent variable, as opposed to the actually
Column (1) controls for industry fixed effects, province fixed effects and year fixed effects. Column (2) controls for industry-level covariates on the basis of column (1). Column (3) further puts in firm-level covariates. Column (4) is controlling for province fixed effects and industry-by...
然后,Stata将确保您的程序调用时使用的是一个现有变量的名称,该变量将被存储在名为varlist的暂元中。(t即使你只有一个变量并在你的语法语句中使用varname,暂元名依然是varlis)尝试pnupt nonesuch,Stata会抱错,说“variable nonesuch not found”。 (如果你之前有过编程经验,并且花费大部分时间用于检查输入错误,仅...
然后,Stata将确保您的程序调用时使用的是一个现有变量的名称,该变量将被存储在名为 的暂元中。(t即使你只有一个变量并在你的语法语句中使用 ,暂元名依然是 )尝试 ,Stata会抱错,说“variable nonesuch not found”。 (如果你之前有过编程经验,并且花费大部分时间用于检查输入错误,仅少部分真正用于手头任务,你将会...
Thus, after typing tempvar sum y—the one case where you do not put single quotes around the name—refer thereafter to the variable 'sum y', with quotes. tempvar does not create temporary variables. Instead tempvar creates names that may later be used to create new variables that will ...
\Program Files\Stata18\ado\base\_\_bayespredict_notfound.ado C:\Program Files\Stata18\ado\base\_\_bayespredict_parse.ado C:\Program Files\Stata18\ado\base\_\_bayespredict_regexm.ado C:\Program Files\Stata18\ado\base\_\_bayesstats.ado C:\Program Files\Stata18\ado\base\_\_bayesstats_...
the current frame. New variablecountiesis created in this case. If I were to drop the variable, I would eliminate the link, but I’m not going to do that. I’m curious whether the counties in which people reside in persons.dta were all found in counties.dta. I can find out by ...
bytes.Ifthevariableisnotabyte,youcaneasilyconvertitbyusingeithercompressorrecastassumingitisaninteger between127and126. 20StataTechnicalBulletinSTB-6 Thisado-fileisusefulwhenyourcategoricalvariableisordered.Inthiscase,eachdummyvariableshowstheamountof changebetweencategoriesratherthantheamountofchangebetweenthecatego...
S: Unit variable (numeric or string) T: Time variable (numeric) D: Dummy of treatement, equal to 1 if units are treated, and otherwise 0 (numeric) Syntax sdidY S T D [if] [in], vce(method) seed(#) reps(#) covariates(varlist [, method]) zeta_lambda(real) zeta_omega(real) ...
(newvar) variable to generate indicating groups of matched cases and controls casevar(varname) binary variable with cases=1 and controls=0 maxmatches(#) maximum number of controls to match with each case calipermatch(varlist) list of numeric variables to match on using calipers caliperwidth(...