clogit vs. xtlogit, fe

Is there a difference between clogit and xtlogit, fe ? It appears to me they both do conditional logistic regression with fixed effects.

Time lag for Multi_level fixed effect panel data.

Hi all, I have some douts about time lagging for my independent variables in multi-way FE panel data (reghddfe). I have this panel model wi...

-sreshape-

i just installed -sreshape- onto stata mp.. does anyone know if it has a max variable limit? i have 7500 vars in wide format that i wanted t...

Lasso regress questions

Hi, I am college student from Barcelona. It is hard to learn Stata by myself because the teacher does not explain how to use commands, what ...

Add Text to Graph Combine

I am combining three graphs using 'graph combine'. By default they appear in a 2 x 2 arrangement with the lower right slot empty. I...

Obtaining mean and SD from survey data

Hello, I am trying to get the differences in the length of stay(LOS) in subpopulation of myocarditis, categorized by whether they have arr...

Showing country-specific treatment effects

Hello, I'm currently working with a dataset with individual respondents. In my analysis, I show the average treatment effect for the t...

Standard Error Correction in a two step process

Dear all I wonder if anyone has any references, and perhaps Stata applications, that can help me solve a problem like follows: Code: us...

WLS regression using regwls and regress

Dear All, I have a question regarding WLS regression using Stata commands regwls and regress and would kindly ask for your help. For your...

Inverted Normal Graph

Hello all, Admittedly a mundane question here... I'm simply trying to plot an inverted normal distribution for an upcoming presentatio...

How to do matrix exponential operation in Stata?

Code: matrix A = (1,0,0,0,0\0.6,0,.4,0,0\0,.6,0,.4,0\0,0,.6,0,.4\0,0,0,0,1) matrix list A matrix B = A*A I know how to do A^2. Now I wan...

gsem covstruct

Hello. I am running LPA analysis using gsem command. I ve run the analysis in R using the mclust command too. The problem I have is that I ...

Generate balance table

Hi, I'm trying to replicate this balance table (as in the picture) using some of the example datasets installed with Stata, in particula...

extract variable labels for new variable names

Hi there I try to automate my programming as much as possible and one challenge I've come up against recently is in trying to name new...

Count number of cases if dates are within a certain range (a la statsby)

Greetings all, I have single line per observation survival data (4 million lines). Here is a simplified example default zip code dat...

Multinomial logit with sample selection

Dear everyone, I am looking for something similar to Heckman selection model/svysemlog with a modification. I have a selectiion variabl...

Manually installing Blindschemes by Daniel Bischof

Dear Statalisters I admit this is a bit of a non-problem, but I'd like to find a solution nonetheless. Never underappreciate a nice gr...

How to declare data with tournament structure as panel data?

Dear all, I recently read some papers using panel data from sports. I started to wonder how one would actually declear data e.g. from tenn...

Drop ID if different observations for that same ID do not vary across another variable

Hello, I am using Stata 14.2 on Windows. This is my first post so I hope I am doing this correctly. The dataset I am using contains arou...

Drop ID if different observations for that same ID do not vary across another variable

Hello, I am using Stata 14.2 on Windows. This is my first post so I hope I am doing this correctly. The dataset I am using contains arou...

Mixed or reg i.country i.year for repeated cross-section data

Dear all, I am doing a time-series cross-sectional data from 4 waves and around 25 countries and I am using Stata 14. The dataset used is ...

destring numbers in scientific notation

Dear community, I was inattentive when pasting data into a new stata-file and now the following problem presents itself: I have a unique n...

Interpretation of the interaction term when the relevant dummy variable is insignificant

Dear all, In the model that I have run to analyse the effect of currency swaps on the gross capital flows of the countries signing them I ...

categorizing data

Hi all, I have a dataset includes up to 30 string variables. Some of them are dummy variables and the others are categorized with a limited...

Droping observations with x amount of missing values

Dear all, I'm working with a messy data set with approximately 870 observations at the moment. After using the command missings table ...

Meta analysis of hazard ratio

Dear , My name is Hatem Ali I am trying to do meta analysis of hazard ratio to assess effect of rise in IL6 on overall survival I have th...

Creating a value that equals the average of other values for the same variable

(Sorry about the poor phrasing of the question) My dataset contains variables such as country and prevalence of obesity , for 34 countries...

Collinearity error when including continuous variable in dummy regression

I am trying to run the following two regressions to compare the coefficients on the 'iso_str' dummies. The only difference between t...

getting a sample size

hi, I'm trying to get the sample size of black women from my data set. I created a black women(bw) variable, counted the bw and then c...

Cluster Randomized Controlled Trial

I have a question about the Cluster Randomized Controlled Trial. Is it recommended to perform the svyset command when doing the Cluster Rand...

traj command with hierarchical data structure

I'm interested in using the user-written traj command (link below) to identify latent trajectories of change in patients' BMIs. The...

Dipendent Double-Sorting 25 Portfolios

Dear all, I am struggling to replicate the FF-25 portfolios with a variant, I should employ a dependent sort instead of a independent sort....

Generate variables with forvals

Hello Statalist, I have a dataset which contains the following variables: firm (every firm has an assigned number from 1-1000), their produ...

Interaction between variables changes the results fundamentally!

Dear All, I would appreciate your help on the following please: The correlation between y and x1 x2 is negative but between y and the inte...

Weighted least squares (WLS) with wls0 and regwls

Dear Statalist, I am conducting a long-run event study with the use of the Fama French 3 Factors model. I am using the WLS regression, I w...

Which Flavor of ADF Estimation Does Stata Use?

Hey Everyone, with WLS/ADF estimation there are different flavors out there that are being used in statistics software. It is rather easy ...

fill in empty adjacent cells within a group

Dear all, I would like to ask how to fill in empty adjacent rows within a group. Problem here is the confusing data structure. Code: ...

Test for a unit root using panel data

Dear Community, For my master thesis I want to test wether the error term of my model is stationary or not, in order to verify if the regr...

Losing groups while running a regression

Hello, I am trying to make a panel data regression. My group variable (cntry) has 41 countries. But when I run a regression the number of ...

Latent class analysis categorical variables

Dear all, I have been using latent class analysis in STATA 15 and have been able to get results using the gsem command for binary variable...

X11 Forwarding only showing half screen with Stata

I am using PuTTY to do SSH tunneling and X11 Forwarding with an Amazon EC2 Ubuntu instance. Multiple individuals in my system login to their...

xtivreg2 - identifying singleton observations

Dear All, I have a panel dataset with 18,071 observations. I am estimating the following model in stata: xtivreg2 ret2_w mret2_w s_r10...

Saving WTP estimates to conduct Poe Test

Dear all I have run a clogit model and have estimated wtp via wtp, krisnky command. I now want to save the wtp estimates so I can perform ...

Formatting and managing dates, from String to MMYYYY format

Dear All, I am a new user in Stata. I am having a basic question and would kindly ask for your help. I want to change the data format from...

Bootstrap

Hi everyone, I need some help with understanding why STATA doesn't let me use the command: bootstrap_b. It writes: unrecognized comma...

Advices on how to learn systematically how to work with panel

Hi everyone, I have very elementary skills in econometrics and until now I've only worked with cross-sectional data. Now I need to wor...

How to interpret the result of the "Total Factor Productivity of Manufacturing Firms" based on Levinsohn and Petrin (2003) approach?

I intend to measure the TFP of manufacturing firms for 23 firms through Cobb - Douglas Production Function Approach using Prodest code in St...

PMG insufficient observation

Hi everyone, I was trying to run panel under PMG effect. N= 36 over the time period 1984-2016. When I run the command for the full panel, ...

Finding code snippets from Stata's base commands

Dear Statalist, Is there a way to see the programme code from Stata's own base commands? In my case, I am interested in seeing how t...