random treatment,50 times loop and store the estimate with p value for the variable of interest (POST) and display.

Hi, I want to randomly assign treatment and run the same regression in the loop for 50 times and then I want to see how many times my vari...

Interpreting dummy variable with no constant in the model

Hi statalist, I have a question regard to how to interpreting dummy variable with no constant in the model. For example, in this cross secti...

Replacing Contents of All Variables

I have a data set in which I have students' grades for their 30 subjects aprox. These are letter grades like A*, A, B,... I want to conv...

ppml: Number of regressors excluded

Hi, I am using the PPML estimator but I am not really sure what does it mean?: "Number of regressors excluded to ensure that the es...

Smoothing Kaplan Meier Curves

Hello STATA Community, I am a new STATA user and I am trying to compute smooth Kaplan Meier curves. Is this possible? After created my s...

Adding time variables

Hi, I am currently working with time data. The following is the time each person spends alone on each activity (25 activities, shown only ...

Syntax of cross-classified multilevel model

Dear Statalist, I need to analyze data with complex structures. My data set consists of individuals who are fully nested within teams, wh...

Out of Sample/Scope Prediction with CI

I need some help to get more details for Examples 2&3 to work (page 7 in regress postestimation — Postestimation tools for regress ) ht...

IV

Dear all, I have a question concerning a comment from a reviewer and I am not quite sure how to go about it. To keep it simple, I have a p...

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Data management problem

Hi I am trying to analyze some data, and have entered some commands,..as reproduced below,.. however when i get to the loop in red,..i'...

ci for categorial variables - tabci?

I'm just wondering why Stata gives CIs for binary variables - ci proportions varname - but, as far as I tried to find, we cannot have re...

Command stir does not accept iweights

Hello I've been using the command stir (incidence rate comparison). The manual says that stir allows iweights and fweights (more specif...

Replace if not found within a loop

Dear all, I am trying to bottom and top coding the household income for each country - wave. I am using the following loop that I already ...

endogenous switching regression model

Hello, Please I am new in stata so it's quite difficult for me to solve some regression problems. Actually, I am trying to estimate a...

-dstdize- to calculate average age-adjusted death rate by race

Good Morning, I would like to calculate the average age-adjusted death rate by race (separately for whites and blacks), and test if the ra...

Can I test country level data and firm level data in one regression

Hello everyone, I'm trying to find the effects of culture on the existence of teamwork. My dataset consists of 29 countries and of aro...

Generating a new variable that equals the Nth non-missing value in a row

Hi All, I am essentially trying to compress a row of variables into just the non-missing entries. My dataset looks like this Code: * E...

working out expressions(sum and multiply) in stata with some missing observations

Hi Nick Cox I want to add and multiply certain variables in stata in a new variable VaR. My expression is: gen VaR=constant_term+ (coef...

two stage IV approch

bootstrap "repeated time values within panel" 2 SRI I'm trying to run 2sri approach(control function) in Stata 15. My first ...

Looping Over the numeric value of a variable and use it for the subsequent loop.

Hi, thanks for your help in advance. I have the following dataset. And I come up with the following code: Code: egen t=max(dateday_coun...

Marginal effect after heckpoisson

Dear All, I am new to stata and I am using Heckpoisson, a poison regression model with endogenous sample selection model to estimate facto...

Numbering occurrences of a flag within patients.

In the example below I have created OVERLAP_FLAG, which is equal to 1 where two consecutive regimens overlap and their start dates are withi...

Generate a new variable in a loop in different files and calculating the mean

Hi, I want to write a loop to generate a new variable called savings (income-expenditure) in two separate files. Use sample weights with n...

how to export Summary Statistics to word

Dear Sir/Madam I am working on my thesis on impact of informal credit on household welfare. I try to generate summary statistics for comman...

Adding partner data to responding person data in a panel data file

I wish to extend my analysis of panel data to include information about the responding person's partner so I began the process of mergin...

Matching observations across boundaries

I am looking at houses on each side of a designated geographical boundary. Does anyone know how to match house characteristics on either s...

F test for cof.

Hello everyone, My model is: Y = b0 + b1.x1 + b2.x2 + b3.x3 + e and I use GMM for this model. I want to test b1 + b2 < 0 by F-test ...

Panel data with three identifiers

Dear All, I am currently working with a country-year panel dataset which has data for value added for multiple sectors. It looks as follow...

Split to multiple files, merge and append

I have two files, each with 3 variables. The first one has date, city, and score. The second one has date, city and ret. Each has 49 citie...

Loop for running individual regression for sectors and then taking average of all coefficients

Hi, I have to run three regressions , from three separate files and then take a mean of all explanatory variables (for national estimate) b...

Generate an initiale value for each five year interval in unbalanced panel data

Hi dear Statalister, I have an unbalanced panel data and i want to generate a new variable. This variable should take the first value of va...

Predictions using gologit2 - issues applying coeffcients to validation dataset

I'm new to Stata, so apologies in advance if this is a basic question. I am having some issues applying coefficients from my gologit2 mo...

Forcing my Event Study through R2000 in loops

Hey Everyone, I'm currently trying to run a regression/prediction of some abnormal returns. All good so far, but during my iteration, ...

Merging multiple Spss data sets into STATA

Hi, I'm trying to merge a few UNICEF MICS survey data files together which are on Spss onto stata, for example file ch.sav with hh.sav. ...

Specification of funnel plot with -funnelcompar-

Hi Statalisters I want to assess county differences in medication rates in Norway to detect outliers. For this purpose I want to use funne...

Specification of funnel plot with -funnelcompar-

Hi Statalisters I want to assess county differences in medication rates in Norway to detect outliers. For this purpose I want to use funne...

Panel data with fixed effects model having dummy/time-invariant variables in data set

Greetings, I'm trying to conduct FE-model test on my panel data set. The panel consists of 116 companies, observed over 5 years. Withi...

Generating a new variable based on several specified conditions

Dear Stata-Community, I am currently working on a paper in which I want to create a variable that indicates the number of respondents that ...

Test for differences in Medians for Multiple Variables Using qreg

Dear Stata Users: I would like to Test for differences in Medians for Multiple Variables Using qreg following the Stata Journal HTML Code:...

Generate mean and median test results in Stata

Dear Stata Users: I am trying to generate mean and median test results in Stata. Thanks to Kain Chen HTML Code: http://kaichen.work/?p=1...

Type mismatch issues with generating / replacing

Hi all, I'm currently trying to create a dummy variable, inlaborforce, using the below code: gen inlaborforce = 0 replace inlaborfo...

Create several nested regression tables in the same file with asdoc

Dear all, I want to create several nested regression tables in the same file and do it with option reset in asdoc. However, the created f...

Model selection to study individual fund attribute's impact

hi, I have daily data for large number of exchange traded funds for 10 years . I am trying to examine the fund attributes such as expense ...

test

Code: l

-xtlogit- Four-Way Dummy Variable Interaction Term Interpretation

I have a two-year panel data set of patients who all received a treatment at the end of year 1. The panel is split into eight 3-month period...

Having Variables in X-Axis side by side, rather than in different groups..

Hello all, probably a very basic question but I am brand new to stata and trying to teach it to myself (Stata 16) I am trying to create a ...