Between subjects error term for three-way repeated measures anova
I have been having some difficulties trying to run a three-way, repeated measures anova. I have made several attempts to try and run this su...
Panel Data Regression and ANOVA
Hi, I am using panel data for US manufacturing companies for the period 2000-19. I am focusing on the impact of international diversificat...
Find value starting with a pattern ( similar to LIKE operator in SQL)
Hello ALL, I am new to Stata, I have a small doubt, Any Help would be greatly appreciated. TABLE1(.dta) Column1 Column2 Column3 Co...
mata mlib create
I'm having trouble with mata mlib create . I can't see to get a mata library set up anywhere
Changes in Control/Treatment groups after PSM
Dear friends, Hi. As in the previous post, Hi All, In case anyone viewing this thread is interested, here's the code to do wha...
Trying to calculate time length for hospital episodes of multiple consec. rows, but also multiple nested within one 'person'
Hi STATALIST, First time poster here. I am hoping someone can assist with my hospital record data calculations of nested episodes length of...
Set colors
Sorry, I have asked this before. But now I have two computers and have spend an hour with help and the manuals and can 't remember how t...
local macro and loop
Hi Statalist, I am trying to use a local macro with a foreach loop to clean up some vars. Here is my code: Code: local yn1 q1 q2 q7 q8 q...
Modelling temporal dependence in within-between "hybrid" models
Dear Statalisters, I would like to know how to properly specify a temporal variable in within-between "hybrid" random effects mo...
Marginal effects for group comparisons in probit regression
Hi all, I am trying to use a probit model to analyze a bunch of interaction effects for a binary dependent variable in a probit model. My ...
Idiosyncratic Skewness
I run the below code on appended dataset to calculate monthly idiosyncratic skewness as skewness of residuals obtaining by regressing previo...
Likehood ratio test showing error
Dear colleagues, can someone kindly assist me in identifying problem while you likelihood ratio test in this data.Am getting the error messa...
DSGE model relating-questions
Christiano,2017, abstract stated that Macroeconomic policy questions involve trade-offs between competing forces in the economy . The probl...
Combine two dataset and matching
Hello Everyone, I have a problem with two different datasets with not the exact name, which makes it hard to match. For example, the first...
Creating spine variables for regression
I am hoping someone can help me. I have a time variable coded as months from Jan 2016 to Feb 2020 I am hoping to fit some splines to my re...
Fuzzy Regression Discontinuity estimates and plots do not match
I'm using the ssc packages rdrobust and rdplot to estimate and plot the fuzzy RD estimates of a regression of expenditure on population,...
Test with panel data
Hi, This is my first post in this forum, hoping to get some help. I am doing a test on a panel data from year 2000-2020 which should be or...
Categorical variable as an instrument
Hello, We are running a model with a binary endogenous X variable and a continuous Y variable. We potentially want to instrument our X var...
Cluster standard errors in SUR estimation - sureg or gsem?
Hi, I am trying to estimate vote shares of different parties. So, I have 3 parties, each having its own column in the data set. Hence, the...
ttesti: using se as input instead of sd
Hi everyone, I am trying to calculate the independent t-test using ttesti which requires mean, sd, and sample size. Given that I do not hav...
do we have simpler syntax to realize this goal?
Code: if lnEmployee1Y ~=. & lnCash1Y~=. & lnTtlAsset1Y~=. & stdRevenue1Y~=. & stdNetProfit1Y~=. & lnRDExp1Y~=. Thanks...
PPML and fixed effects commands
Good evening, guys. I'm currently working on a gravity model with PPML estimator. Here is the thread: I'm using a book from Yotov et...
reshape error
Hi, I am trying to reshape from wide to long, but it keeps saying that "variable id does not uniquely identify the observations". ...
Exact matching on Propensity Score Matching
Dear Stata Forum, I’m trying to perform a Propensity Score Matching with exact matching but found most examples on years using double, whi...
Converting Stata version 16 to Stata version 12 with Stat/Transfer in Linux
Dear Forum Members, I have some Stata version 16 data files, which I would like to convert to Stata version 12 files. I know that I can us...
post and postfile help after regression
I am running a simple regression repeated for ~1,000 variables in a loop. I would like to capture the beta coefficients, se, and p values fo...
Question about "spxtregress, re sarpanel" and serial correlation
Recently saw this tweet from Jeffrey Wooldridge and it made me question my understanding of how spxtregress, re sarpanel models are capabl...
Dropping unnecessary variable from BRFSS data to save space
Is there any efficient way to keep the variables I need and drop all the unnecessary variables ? In BRFSS , I need to clean year by year and...
fe and first-difference estimator with controls and weight in baseline year
I have been learning from Statalist for some years now. Thank you for being there for us! First time I ask a question as I normally find sol...
How to force vertical lines to be above of all horizontal lines using twoway
Dear all, How do I force the gray area to be above the yellow areas in the graph below? Code: clear set obs 100 gene x = runiform() ge...
Drop if in range
Hello, how can I drop a group if there is a missing value in any variable per group. In the example blow, my group is identified by "...
Marginal effects at representative values
Dear all, I am working with Stata's margins command and have some difficulties to interpret the meaning of "marginal effects at r...
Generating sequence of observations.
Hi, I have the "have" variable and based on that "have" variable, I want to generate the two variables, i.e., "want...
NA's in sureg()
Hi, How are NAs in the dependent variable column dealt for in sureg()? I want to estimate a system of 4 equations using sureg(), where al...
r(198) invalid varname
Hello , I do not know why stata tell me "r(198)invalid varname. " I check it for several times. I hope I recieve your assistance s...
How to generate the column before a column
Sorry if this has been asked before I have dataset containing var1 and var2. I want to generate a new variable(var3), such that it matches...
Forloop: too many variables specified r(103) error
Hello, I've been around for a year on this community, but this is my first post. I am running a forloop, and it gives me this error: t...
Repeatedly obtain values after a certain condition holds and ignore observations inbetween
Hi all! I would really appreciate your help with the following: I have obtained buy signals from stock data close prices for every 5 minut...
What is the required sample size to use Panel VAR in Stata?
Dear researchers, please I would like to ask this question: I have a yearly dataset covering 35 countries and with 3 variables. The idea fo...
Calibration plot for logistic regression models
I want to perform a calibration plot for several logistic regression models like this. But I did not find how to do it with Stata. Thanks i...
Problem with Merging
Hi, I am trying two merge two datasets using the key ID (Neighborhood_Code). However, Im getting the error " Each key variable -- t...
Obtain very different results using -xtreg- and -margins- / can I store the results from -margins- in a table
When I run the interaction between a dummy (0/1) variable (at3) and a categorical variable (vtype), the results from -xtreg- are very differ...
How to group several columns?
I am dealing with data with information of different candidates, the results of each candidate is distributed by class 1, 2, 3, 4 Candidate...
Breusch and Pagan LM test for random effects
Dear community, I am deciding among Pooled OLS, Fixed and Random Effects panel models in the presence of first-order autocorrelation ( nul...
Puzzling Post Hoc Power Calculation
I was trying to show a colleague that post hoc power calculations are nonsensical with the following example: Code: . /* Congruent Resul...
Applying the Mundlak approach in 3-level hierarchical model. Which is the correct mean of a level-2 variable?
Hello! We have a question about implementing the ‘Mundlak’ approach in a multilevel (3-levels) nested hierarchical model. We have employee...
Error exporting dataset to excel using foreach loop
Hello, I am trying to export data set to excel using foreach loop in STATA 13.1. But the stata throws the error observations must be betwee...
combining two graphs
Hello, Is there a way to combine the scatter plot with the fitted line from the regression with an indicator variable? I am trying to co...
sureg with fixed effects and clustered errors
I want to estimate a system of 4 equations, where the Y-Variables sum to one approximately, and so the error terms are correlated. The data ...
Triple Difference and Kernel-based PSM
Dear all, I run differeneces-in-differences regressions with a kernel-based PSM adjustement with the command "diff". I would li...
Import value labels for each variable in a loop in frequency tables generated using putdocx
Hello, I have been browsing manuals and forums but I have been stuck with this issue and hoping to get some advice. I managed to get frequ...
Contrast statement after multiple imputation
Hi Statalist I am trying to analyse some data collected from a randomised controlled trial using a mixed model. The outcome score is colle...
Graph bar
Hello, I need to reproduce a similar graph bar to the one attached. It is basically an histogram, but with various subgroups, so I have to...
Interpeting interaction estimation reuslts from regressions
Hi all, My name is Gráinne Gibson and I am currently doing my masters dissertation on the effect of Single-Sex schooling on adolescents no...
Time-varying interaction term with year fixed effects
Hi, I am investigating the effect of a commodity price on conflict. I have created a grid of cells with georeferenced data. I am using xtreg...
Quantile Panel Regression
Hello. I just wanted to know this. How do I exactly know when to use quantile panel regression
multiple values for same value label
Hi everyone, I am working with a categorical variable called Code: plnowm which expresses the month in which every individual moved int...
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