Theory question: Need references for DiD-Cox regression
Hello statalisters, I hope I'm not posting at the wrong place here. If I do, please let me know. I found a very informative old Statalist-Post about how to run DiD Cox-regressions (see...
View Articlecode for Fama-Macbeth with Shanken (1989) correction
Hi statalist, I'm looking for a command to apply fama-macbeth regression with shanken correction. I find code written and presented in command fm and xtfmb. fm code is here:...
View Articlecheck whether variable contains specific realization
Hi all, I would like to check (in an if environment) whether a certain value of var2 appears somewhere in var1 and consequently mark it in var3; If possible also using a by operator to check that for...
View ArticleMinimum Mean Squared Error estimator
Dear Statalist users, Any suggestion of documentation that discusses Stata implementation details of Verbeek and Nijman’s (J. of Econometrics, 59, 1993) Minimum Mean Squared Error (MMSE) estimator for...
View ArticleSpmat command options- SAR, XSMLE, Spatial Lag
Hi Statalist, I'm creating a spatial wieght matrix; spmat idistance ddistrict lon lat, id(distid) dfunction(rhaversine, miles) normalize( . ) I was wondering if someone could please explain the...
View ArticleHow to obtain initial values for melogit
I have problem with my model, since stata iterations always end up with not concave error. One possible solution can be initial values. But the problem is I don't know the syntax for it. I've searched...
View ArticleFE model: sufficient number of transitions?
Hi all, I am just wondering if there is a way or a rule of thumb on how many transitions I need to observe in order to run a FE model? I am looking at transitions out of cohabitation and am observing...
View ArticleConverting EFA and Cluster Analysis Data to Multi-Dimensional Scaling in Stata
I originally posted this in the Sandbox and was advised to post it here. I appreciate any help. Here is my first posting: I am doing research on factors of student success using a 40-question survey....
View Articlequi and quietly are the same command? but "quietly" brings...
Hello everyone, I am leaning stata by following already made "do foles" The command below works fine. But as I replace qui with "quietly" (as I believe these two are the same command), it brings an...
View ArticleSurvival analysis
Hi all, In the review of a scientific article in which I made two type of survival analysis 1) Kaplan-Meier method with log-rank test and 2) Cox regression model, I received the following...
View ArticleConfidence Interval for Logistic Regression
Dichotomous outcome: Negative biopsy(0) Positive biopsy (1) Three Predictors: x, y, z (all continuous variables) I use the command logit outcome x y z to get intercept and betas Risk score = intercept...
View ArticleReshaping data
Dear all, Am trying to reshape the data below so that each hhid is represented by a single observation. So far, I have tried creating a new "j" variable and use hhid as my "i" in vain. What can I do?...
View ArticleAdvice on creating a loop to generate a time updated slope variable
Dear Statalist This is my first post and I'm afraid I'm not a very experienced programmer and I can't find similar answers online but I really hope one of you will be able to help me. I am doing an...
View ArticleReorder multiple numbered variables (stub ending) sequentially and make them...
I'm using Stata 14 and have a seemingly simple question about order the variables in my list. I have multiple variables that are tagged with numbered stubs at the end. I'd like to order these variables...
View ArticleItem response model in Stata 12
Dear all, I would like to use item response model (that is developed with Stata version 14) in Stata 12. However, whenever I tried to install it via "ssc install itr" or " findit itr" I could not find...
View ArticleInteraction terms
Hi there, I am looking at the determinants of debt source before and after the financial crisis of 2008 and wondering what would be the best way to go about this in Stata. I have my dependent variable,...
View ArticleMultiple observations per id
Hello, Im new to STATA so excuse my inexperience. In my dataset I have multiple observations per id. In a simplistic way it looks like this ID Dummy X Irrelevant data More irrelevant data 1 1 5 1 1 5 1...
View ArticleIs there anything more efficient than rowtotal?
Hi, First let me provide a generalised version of my dataset. Code: * Example generated by -dataex-. To install: ssc install dataex clear input str2 a byte(b1 b2 b3 c1 c2 c3 d1 d2 d3 e1 e2 e3) "b1" 1 4...
View ArticleCumulative Abnormal Returns calculation
Hi, I am very new to STATA. I was wondering what the best variables to use to create a dataset for an event study on M&A returns that aims to calculate the cumulative abnormal returns.. Cheers Femi
View ArticleInsignificant coefficients with fixed effects model
Hello, Im working with a model which try to explain drivers of income inequality in Latin America. My dependent variable is the Gini coefficient and as regressor I have a set of explanatory variables...
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