Interaction term w/o including one of the variables
Hi, I have a panel of firms in 8 years, categorized in two sub-samples of treated and control. I want to see the effect of treatment on an outcome variable Y by regressing Y on the treatment dummy...
View ArticleLLC test indicates stationarity; IPS indicates unit root
Dear all, I am using Stata 14.1 to analyze balanced panel dataset of 11 countries over period 2002-2014 (143 observations). As a first step, I want to check for stationarity of the series, in this...
View ArticleAdvanced if-function needed
Dear colleagues, I am working with a dataset with more than one entity per cluster. Meaning that the dataset contains one case for the main person and one for his/her partner. The partner case can be...
View Articlegen dates greater than ...
Hi all, I have data from 04jan1999 to 11apr2016 I would like to have 4 periods : First: 01/04/1999 à 10/12/2004 Second: 10/12/2004 à 29/12/2008 Third : 29/12/2008 à 08/12/2014 Fourth : 08/12/2014 à...
View ArticleDifferent signs of instrument in treatreg and ivreg
Hello. I am trying to estimate a model using instrumental variables in cross-sectional data. The outcome variable are test scores, the endogenous variable is school classification (binary), and my...
View ArticleWhat are the differences between -matchit- and -reclink-?
Someone has asked me the above question in a private message, but I guess the answer may interest other Statalist users. Moreover, other people may have a different take on it which may correct or...
View ArticleIOT Stata Module Update on SSC
IOT Stata Module update is available now on SSC Thanks to Prof. Kit Baum iot can estimate: - Leontief Input-Output Table - Input-Output Sectors Transactions - Input Share (%) in Intermediate Input (Ij)...
View Articlefreduse error
freduse is an ado: findit freduse when I'm using freduse I get the following error: Code: . freduse UNRATE, clear unknown network protocol cannot copy UNRATE from...
View ArticleUsing eqno# function
Hello Statalisters! I was wondering if I could get some help using the following command: test [eqno=eqno[=...]] [: coeflist] My problem is as it follows: Given the following set of equations: y = a +...
View ArticleEstimating the impact of a deviation of one variable from another one in a...
Hi All, I am trying to find a command in Stata that can estimate different measures of the deviation between two covariates, e.g. x1 and x2. The empirical model I would like to run is on a panel data...
View ArticleElasticities - logging vs. eyex margins in fractional regression
I'm estimating a simple bivariate fractional regression model (Stata 14). My outcome and predictor are fractions, neither include zero values. Given that the predictor is also a proportion, I believe...
View Articleconditional and unconditional margins after two-part model
Hi Statalit I use Stata 14. I'm trying to run a two-part model (first-part : logit and second: glm/poisson/log) and the Code: twopm perfectly works. To show my results, I would like to show margins of...
View Articleby() processing with string vs. numeric variable
I am using the user-written egen_inequal package which calculates inequality statistics such as the Gini. I am calculating the Gini for by-groups. If the by-groups are defined using a numeric variable,...
View ArticleTesting equality of parameter estimates between two models for an explanatory...
Dear Statalisters, I intend to test for the equality of the coefficient estimates for one of my explanatory variables for two different models/methods, i.e. fixed effects, and random effects. For the...
View ArticleTesting coefficients equality in panel data and xtsur regression
Dear Stata Users, I’m using a SUR model in an unbalanced panel data context (xtsur Stata module). I’m running two separate regressions with the same number of observations and the same set of...
View Articlehelp with zanthro
I am trying to calculate z scores for children over 5 years of age using the WHO growth reference 2007. I am using a Mac. I installed zanthro and used the following command: . egen zhawho=...
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Please help with emh
Good afternoon, I am trying to use .emh to testing between-subjects and within-subjects effects for data requiring non-parametric version of repeated-measurements ANOVA. The study was conducted on 10...
View ArticleRegression when dep. variable is a proportion: a few questions
Hello I am doing an analysis of the determinants of census tract unemployment rates. Some of the previous literature on my topic has used straight OLS regression, and I started with this type of...
View ArticleTime id on panel
Hello everyone, I have an unbalanced panel, and I want to create a variable that identifies all observations that have 4 observations in the panel, specifically the last 4 quarters, it does not matter...
View ArticleInteraction term between a dummy variable and a quadratic term
Hi, I am using stata 12 and running a multilevel model. I want to test three hypotheses: 1) Individuals' income has a curvilinear (inverted U-shaped) relationship with protest participation1)...
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