Wildcards with strpos/regexr
Could someone give me an example on using a wildcard with strpos and regexr ? For example, I want to scan a string variable (with multiple words) called meds for nu seal, nu-seal and nuseal, (or...
View ArticleKruskal–Wallis one-way analysis of variance
Hello everyone, I am bothered by a question regarding group differences in my data set. I have a dataset with variables (ordinal, dummy, and intervall) from 10 different communities. I want to run...
View ArticleExtremes
Hi everyone I have a big dataset, with 280 variables (made a global varlist with all of them). I need to identify whether if there are strange extreme values so as to drop them I have read about it and...
View Articlebysort produces different results everytime
Hello, I have a strange problem. I am using the following code to count the unique visits of an insurant/patient (via DispensingDate). InsurantNumber is unique to a patient and to a doctor, meaning one...
View ArticleDHS WEIGHT
Hello, Please I need your suggestions. I want to use data of DHS to analyse the effect of the consommation of a product on the probability to work. Unfortunately, I have only 100 people who consume the...
View ArticleCluster analysis with mixed data
Dear Statalisters, I want to do (hierarchical) cluster analysis with a data set that contains one continuous variable (age) and data from a few multiple response questions (with dummys for each option...
View ArticleMerge loop over different variables
Hi everyone! I am trying to merge two datasets (household surveys) but I would like to create something like a loop so if the first group of variables don't create a match, Stata should try merging the...
View ArticleConsistency between appearance of graphs in window and when exported
Dear Statalist, I would like to know how to maximize the similarity in appearance of graphs as they appear in the graph window and as they appear when exported, in particular to PDF. Font sizes, etc.,...
View Articletabulate with weighed data
Hello, I have a simple question. I have a dataset that is weighed according to a specific variable. Let's say when I do a simple tab, I write svy: tab X Y. Now I would like to tabulate two variables...
View ArticlePoisson inverse cumulative distribution function that returns k instead of m?
Hello, Stata's invpoisson() function "returns the Poisson mean such that the cumulative Poisson distribution evaluated at k is p: if poisson(m,k) = p, then invpoisson(k,p) = m," according to the user...
View ArticleFixed Effects in Stata
Dear All, I have a panel data with missing observations. I run the following regression: reg y x and tsset id time xtreg y x The number of observations is the same in both regressions. My question is:...
View ArticleSynth: Pre/post MSPE
Dear all I have problem calculating the Post(event)-MSPE in the placebo analysis. I am student at the Norwegian School of Economics and I am writing my master thesis using the synthetic control method...
View ArticleChoice of residuals to use in Two Stage Residual Inclusion strategy with...
Dear Stata-listers, I write to ask your opinion regarding which type of residual to use in a 2SRI strategy with a first stage Poisson regression. I want to estimate a linear model where there could be...
View ArticlePlotting predicted number of events from negative binomial panel regression
Dear Statalist members, I'm trying to plot the number of predicted events per month over time for different age groups, based on a negative binomial regression model. My general coding procedure, after...
View ArticleIs there a combination of xtscc and xtregar?
Dear Statalist, I need to do a regression on a panel dataset (N=19 countries, T=32 year, balanced). My problem is that the data suffers from contemporary correlation as well as a unit root in the...
View Article"added_text_option" in scatter not working
Hi, I use stata 12 on a mac and do have issues with the added text option in a scatter graph. This is my code: scatter c diff_PL_125 [w=population], msymbol(Oh) xline(0) text(120.78 -36.21 "China...
View ArticleString variables functions
Hello everyone, I have a dataset with a string variable like this: name Duomo (1) Brera (2) Giardini Porta Venezia (3) Guastalla (4) Vigentina (5) Ticinese (6) Magenta - S. Vittore (7) I want to create...
View ArticleSecond Generation Panel Data estimation
Hey Stata Experts, I am trying to estimate panel data using second generation panel data technique, here is the command i am running xtpmg d.pcgdp d.pcoda d.pcfdi d. inv d.cor d.tr d.le, lr( l.pcgdp...
View Articleproblem in reshaping data
Hello! I have panel data in long format on mergers and acquisitions: acquirers, (uniquely identified by their cusip ("acusip")) that made several acquisitions in the course of time. Targets are also...
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