Firm and Industry Effects Together?

Hi, In the context of corporate finance, some studies claim to use firm and industry fixed effects together in panel data regressions. How...

stata

Hello . I selecting the excell file. then import the following code in stata gen area=substr( ADDRESS, 1, 1) It is correct for all my file...

variable names as elements?

Dear All, I find this question here . The data is Code: * Example generated by -dataex-. To install: ssc install dataex clear input int E...

Variable not found in nlcom

Dear Everyone, I'm new here and I would like to measure willingness to pay by using double bounded method analysis. I have found the c...

Insufficient observations to compute bootstrap standard errors

I am trying to perform mi imputation with bootstrap using following syntax: 1.mi set wide 2. program define myboot, rclass 3.mi register ...

Problem with a big database

Hello, I want to open an excel file, import it, but it does not leave stata 14, this excel file has 53.6 mb and the pop-up window tells me t...

area specific linear time trend

Hi All, Question 1: I'm running a difference-in-differences analysis on yearly repeated cross-sectional data. I'd like to incl...

new command -rdcont- on SSC: test of running variable continuity in RDD

Hello all! Thanks to Kit Baum, a new package rdcont is now downloadable from SSC! This program can be installed from SSC by typing ssc inst...

Changing many values at once

Hi all, I am working with panel data from a household survey. For each household (nohhold), multiple observations have been made in each y...

Fairlie decomposition

Hello, I am using the fairlie STATA module for decomposition ( https://ideas.repec.org/c/boc/bocode/s456727.html ) to analyze the followin...

Issue with three-dimensional panel data analysis

Hi, I am new with STATA and I would like some advice for the following problem: I am dealing with panel count data model.My dependent vari...

Questions about Data Setting

Dear Statalist, I am now setting the data to write the DID. However, there is a problem with the arrangement of my data to use DID. My ...

Marginsplot, addplot - adjustment

Hello, using the command: - marginsplot, addplot(hist...)-, I got this graph: Array I would like to move the histogram at the bottom of...

Twoway line by county

Hi everyone, For my Panel Data descriptive Analysis I am trying to graph the development of Charging stations per Km for my 18 counties. ...

Merging 3 data sets

Good evening all. I am looking for some help merging 3 data sets. All 3 data sets are sorted by patient ID (ptid) and I would like to merge...

Different resutls between xtreg and xtivreg2

I recently ran into an issue with xtivreg2. I find that the coefficient estimates are so much different between xtivreg2 and xtreg estimati...

Reshape Long Missing Values Error

My dataset is in time series format. I am converting it to a panel using the following code: Code: reshape long var, i(date) But kee...

Doubt with power calculations

Greetings I am new to the forum., I am working with a categorical data set, I am trying to calculate the sample size for one variable in my ...

Parallel loop with numlist and varlist

I built a for loop with locals in it so that I can have parallel loops of a varlist and a numlist. I want to generate a new variable in each...

kdensity for 10,000 variables

Hello, I plan to make an illustrative graph to show kdensity graphs for about 10,000. I use the below coding [QUOTE] forvalues j = 1(1)100...

Importing data from Excel

Dear All, I've got an Excel file with about 37 sheets. The sheets identical (e.g. in terms of number of columns, rows, etc). How can I ...

Reporting results ordered logit regression: individual predictors or entire model?

Hello, I am running the ordered logit regression to predict eh041, by regression on the variables aa001, aa004, ba016, ca001, ea104, eb001...

Wald chi2 disappears after I apply the robust variance estimate

Dear Stata users and experts, I am running an analysis where I have a time invariant variable, cross-section variables, and longitudinal va...

New command -oaxaca_rif-

Dear all, Thanks to Prof. Baum a new command named oaxaca_rif is now available in the SSC archive. This command is a wrapper for the -oaxa...

Quicker way to export correlation coefficients into Excel?

Hello, I am running correlations over hundreds of variables and storing the output of the correlation coefficients, the variable names, numb...

Help with output/results window cutting off variable names

My variable names are not shown in full, is there any way of getting Stata to tabulate so the output shows the full variable name? There is ...

De trending// De seasonalising data - find weekly mean

Hiya, for my project i have daily stock market data (returns and volatility) and daily weather (cloud cover, rain, temp). How do i get s...

IDs in different categories : how to count ?

Dear statalist members, I have a sample of about 1 million people (id) with one or more records in one or more categories (cat), 15 catego...

Cox regression with enourmous Hazard Ratio (logarithmic)

Dear forum, I have encountered a problem in that for my Cox regression my output gives enourmous Hazard Ratios for my outcome (disease rec...

Complex dummy variable

Hi STATLIST, Merry Christmas to those celebrating it and happy new Year. I have a question about the creation of a dummy variable. In par...

Simple Time Series Regression

Hello everyone, I have a fairly simple question and hope you guys can help me out. I already studied quiet a lot questions/answers here in...

FMM lcprob variables

Hello experts, In FMM (finite mixture models), our main models(s) could have certain IVs. Then, I can add some variables to lcprob to spe...

calculating and graphing marginal effects from logit with interaction effect of two categorical variables

Code: * Example generated by -dataex-. To install: ssc install dataex clear input byte(owndecision treat gender) 1 1 1 1 1 1 1 1 1 1 1 1 ...

Writing loop for multiple regressions

I have 10 dependant variables, y1-y30, and its respective lagged variables, lagy1-lagy30. I would like to regress one dependant variable on ...

using "spmap"

Hi guys, I am trying to map the result by using " spmap " command, yet keep having troubles with the error saying "master ...

How to present vignettes in a tabular format

Hello everyone, Could you please help me to present vignettes in a tabular format rather than a running text? Code: use setup, clear ...

The base year for finding yearly effects of the shock in DID

I wanted to estimate a difference-in-differences model using Stata looking at the effects of a trade shock (in 2007) on households' inco...

GEE and distributional assumptions

Hello all, I am using GEE to estimate my dependent variable. The dependent variable has a lower bound of 0 (its observed value, not censor...

repeated time values within panel

Dear Statalisters! I have problems with my time variable. I tried to use this commando: xtset importer1 Year But I get this error messa...

discrepancy between mixed results and contrast command

Hi, I'm running a mixed model for longitudinal data with a two by two categorical interaction (all other variables being continuous). gr...

How to remove observations with no change in the dependent variable in a regression ?

I have a panel data set that is of the form shpro date price 1 1 100 1 2 100 1 3 100 1 4 100 2 1 98 2 2 ...

Panel Regression - Top 10% of income of each industry each year

Dear all, unfortunately I am new to Stata and I dont really know how to go ahead. I want to perform a regression with the top 10% of incom...

Three way tables using svyset

Hello, I am using Stata 13 and I have a question regarding three way tables while using complex survey data. My dataset is weighted and st...

factor variables and time-series operators not allowed

Hi, I am trying to run the following the codes, but get the error message "factor variables and time-series operators not allowed...

Is it possible to divide a variable by the mean across individuals for a regression???

Hello, is it okay to divide each individual's value of a variable by the mean of the sample and then use this transformed variable for...

Assigning variable values to observations based common values of other variables...

I have a data set with 3 variables: one identifies the contract number; one identifies the type of contract (two values (prime or sub); and ...

Merging dates

Hi, I'm trying to merge two dates variables from the same dataset, but I would like to prioritize one on the other: considering date1...

getting estimates when using bayes prefix for melogit

Hi Stata forum members, I need some advice on how to get estimates after fitting melogit using bayesian framework. I have tried using the ...

1-to-(n) Propensity score matching without replacement

Hi, I was hoping if someone can help me with this. I have a data set with about 100 cases and 6000 controls. I want to create a propensity...

Concatenate of a string and a number

Dear statalister, I am trying to merge to database, I would like to try using a concatenate of country and year, first is a string and the...

Convert string to time including milliseconds

I have a variable containing strings in the following format StringVar "2018-12-27 14:28:41.4861930" I would like to convert ...

Joinby two variables

Dear statalisters, I am trying to merge two datasets and I have some problems. I started yesterday merging using Code: joinby firm and...

Generate multiple variables from a variable containing symbols and numbers

Code: * Example generated by -dataex-. To install: ssc install dataex clear input str29 salary_today "243,250 (307,840) (253,454)...

margins not estimable

Hi all, I run a panel data fixed effect regression. There is an interaction term in the model. Through the reults, I can see the marginal ...

Foreach vs. Forvalues when using char() function to remove special characters in a string variable

Hello all, Using Stata 15.1/IC I need to submit a bulk file with a string variable ("NAME" variable in this example) that is r...

Using -cmp- to estimate and interpret a three-stage Heckman model

Good morning all, I am using the -cmp- package developed by Roodman to estimate a three-stage Heckman selection model. I am using the foll...

Hyperlink to the file generated/modified by putexcel

This is a very minor request/question. Several of the user-made commands I use (e.g. estout, and iebaltab) have a nifty feature where they p...

grouped variables

Hi I currently have a variables for income following this structure: Therefore when I run summary statistics it comes up with a mean of th...

Standard errors using Frisch-Waugh-Lovell theorem

Hi, I need to implement the Frisch Waugh-Lovell-theorem in Stata 15 MP (64-bit) in the context of a research project. To illustrate my prob...

questions about model selection with lassopack

Dear STATA users, Sorry to ask you 3 simple questions. 1.When we used lassopack for selecting predictors, if the predictor is a categoric...

Is there a way to rename large number of variables with a single command? (Details)

I have a ton of variables, for example, var1_m, var2_m, var3_m, etc. I want to turn them into var1_2016, var2_2016, var3_2016, etc. Basicall...

Generate with tempfiles

I used Stata tempfile code from one of the earlier posts to append multiple years of NHIS mortality data. The code worked perfectly. Howeve...

Looking for examples of OSIRIS dictionaries and data

Dear Statalisters, I am writing a custom converter of data from OSIRIS dictionaries and need examples for testing. I know ICPSR has a bun...

Strategy to choose the right controls? Conceptual questions

Hello, I have a problem with chosing the right controls for my model and hope someone can help me along . With the model I want to expla...

Generate a new variable by deleting everything after certain character ("/")

Code: * Example generated by -dataex-. To install: ssc install dataex clear input str28 country "UK" ...

Non-linear hypotheses testing with a GSEM

Hello, I'm having trouble with the testnl command after a GSEM model. Specifically, my problem is that I can't refer to the covarian...