Speed up bootstrapped t-stat calcilations
Dear Stata users, My dataset has 776 variables in time-series format. I am running the following code: forval i=1/776 { regress var_MA22Return`i', vce(bootstrap, reps(500)) eststo var_MA22Return`i' } I...
View ArticleTransforming Likert Scaled Variables (Right Skewed) to Normal Distributions
Dear All, I am writing to ask about possible methods in which Likert scaled variables (5 point and right skewed - lots of 5s) can be transformed so that the distribution becomes normal and they can be...
View ArticleMatching keywords in a string with regexm
Hello, I've been trying to use the regexm command to match certain keywords within a string variable. However, I was wondering if anyone knows how to get an exact match for a word within a sentence?...
View Articlegsem assumptions
I have learned how to create a model on gsem. However, I am not managing to check gsem assumptions on STATA. It is fairly easy to check using sem (estat gof command), but STATA does not recognize this...
View ArticleIdentifying occurrence of different events within a time period
Dear Statalist, My longitudinal dataset is organized in the following way: variables: ID, test (categorical 1/4), date (in %td format) ​I am interested in flagging a person if within 6 months period...
View Articlespatial LM test on 2SLS residuals
Hello everyone, I was wondering if it is correct (and possible) to carry an LM test on the residuals of a 2SLS estimated model for spatial dependence. Thanks. girogioc
View ArticleHow do I compare a sub-sample of the data set with the full dataset?
Hello I have a dataset of questionnaire responses from participants. My aim is to discover whether a subsample of this dataset is representative of the larger sample (which includes the sub-sample). I...
View ArticleImplementing a triangular distribution for mixed legit
Dear List, I am currently using a mixed logit to estimate wtp to avoid power outages. The attributes are duration of power outage, time of day of outage (peak versus non-peak), season in which outage...
View ArticleMultiresponse variable as dependent - question about treatment and analysis
Dear members, I have tried to find my answer, but I could not find enough material to be sure about this issue. I have a survey dataset in which one of the variables is a multiple response question...
View Articlebootstrat only works with noisily / trace
Dear Stata list, I am running a user-written program through -bootstrap-, but strangely enough it only works if I include the noisily or trace options. The setup is something like this: Code: program...
View ArticleLooping over a lagged variable with macro
Dear all, I would like to run a regression testing different lag structures. In order to do so, since I have numerous models I'd like to test, I am trying to use macro but with scarce results. More in...
View ArticleOpreg -
I need to estimate a production function using the olley-pakes semiparametric estimation procedure. I am using the routine -opreg- (developed by Yasar, Raciborski, & Poi, Stata Journal 2008, YSR...
View Articlecumulative return for borrowing spread
In the attached spreadsheet i want to find return for date (say 9 mar 2009 ) to find it i am using for loop but it shows error . please help
View ArticleDate/hour variable: format just to see the hour and gen line graph
Hi all, I have a dataset containing fights in a school. I was asked to do some descriptive analysis, especially graphs, using the date variable to see if perhaps students fight more in a particular day...
View ArticleDynamic panel regression (xtdpd) with only time-series fixed effect without...
Dear All, I am struggling to find out how I can run a dynamic panel regression (xtdpd) with only time-series fixed effect without cross-sectional fixed effect. Currently, I have a code as follow: xtset...
View Articlecalculate growth rate in panel data
Hi, In Stata IC 13.0 I have panel of branch level bank data and US state-level gdp. The data essentially looks like: Bank date statenum gdp A 2002q1 MA 100 B 2002q1 MA 100 C 2002q2 MA 110 D 2002q2 MA...
View ArticleString: Add blank spaces
Good morning Stata forum, I have a String variable IncidentLocation. I want to use the first word of this string to concatenate it with another string. For example "Clinic (Medical Services Area)" will...
View Article"Too many weights" error message
Hello, I ran across this error message ("too many weights") after drawing a stratified random sample from a large, administrative dataset (N=803903). The problem surfaces after trying to svyset the...
View ArticleHaving trouble with STATA overwriting values using replace command
I have a question that I am trying to code "Pick your top 3 favorite colors" Then I have a list 1. Blue 2. Red 3. Green 4. Yellow 5. Brown etc. Each of these colors is its own variable and if a student...
View ArticleBoostrap error for a panel two step heckman process
Dear all, I am starting my Ph.D and have some problems with a model, I hope you can help me. I am using an unbalance panel of 8 year to estimate the % of sales due to product innovation (Y2) (in logs)...
View Article