Stata Frequently Asked Questions



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Stata Frequently Asked Questions

Can't find your question? Try checking our General FAQ page.

Transferring data to/from Stata

Stata Graphical User Interface (for Windows)

How do I make windows dock, pin, and float? (shown as a movie)
How do I load window settings? (shown as a movie)
How do I save window settings? (shown as a movie)
How do I set other window preferences? (shown as a movie)
How do I change the font (PC version)?

General Use and Data Management

How can I sort data within rows independently for each observation?
How can I create all pairs within groups?
How do I copy Stata output and Stata graphs into Word?
How can I save the contents of the results window?
How can I make the results window hold more results?
How do I update my copy of Stata?
How do I check that the same data input by two people are consistently entered?
How can I list observations in blocks?
Can I do by and sort in one command?
Why am I losing precision with large whole numbers (such as an ID variable)?
How can I quickly recode continuous variables into groups?
How do I standardize variables (make them have a mean of 0 and sd of 1)?
How can I randomly assign observations to groups in Stata?
How can I draw a random sample of my data?
How can I "fill down"/expand observations with respect to dates and then update my dates?
How do I assign the values of one variable as the value labels for another variable?
How can I detect duplicate observations?
How can I access information stored after I run a command in Stata (returned results)?
How can I identify cases used by an estimation command using e(sample)?
How can I sample from a datasets with frequency weights?
Files
- I have Stata 10, how can I save data so they can be used in Stata 8 or 9?
- How can I generate automated filenames in Stata?
- How can I merge multiple files in Stata?
- How can I combine a large number of files?
Missing values
- Can I quickly see how many missing values a variable has?
- How can I see the number of missing values and patterns of missing values in my data file?
- How can I quickly recode missing values into different categories?
String variables
- How can I quickly convert many string variables to numeric variables?
- How can I turn a string variable containing dates into a date variable Stata can recognize?
- How can I extract a portion of a string variable using regular expressions?

Error messages

How does Stata compare with SAS and SPSS?

General Statistics

Regression

Interactions and comparing coefficients across groups
- How can I understand a 3-way continuous interaction? (Part 1: Stata 10), (Part 1: Stata 11), (Part 2: Stata 10), (Part 2: Stata 11)
- How can I understand a continuous by continuous interaction? (Stata 10) (Stata 11)
- How can I understand a categorical by continuous interaction? (Stata 10) (Stata 11)
- How can I get anova main-effects with dummy coding?
- How can I compare regression coefficients between 2 groups?
- How can I compare regression coefficients across 3 (or more) groups?
Regression graphics
- How can graphically compare OLS and BLUP results in Stata?
- How can I do a scatterplot with regression line in Stata?
Types of regression
How can I compute effect size in Stata for regression?
Comparing various methods of analyzing clustered data in Stata.
How can I create dummy variables in Stata?
Can I make regression tables that look like those in journal articles?
How can I analyze multiple mediators in Stata?
How can I do moderated mediation in Stata?
How can I perform Sobel-Goodman mediation tests?
How can I run a piecewise regression in Stata?
How can I find where to split a piecewise regression?
How can I perform the likelihood ratio, Wald, and Lagrange multiplier (score) test in Stata?
How Can I Perform Post Estimation Tests with Multiply Imputed Datasets?

Logistic Regression

How can I understand a continuous by continuous interaction in logistic regression? (Stata 11)
How can I understand a categorical by continuous interaction in logistic regression? (Stata 10) (Stata 11)
How can I understand a categorical by categorical interaction in logistic regression? (Stata 10) (Stata 11)
How do I interpret odds ratios in logistic regression?
How do I use adjust in probit or logit?
How can I get a Somers' D after logistic regression in Stata?
How can I estimate relative risk using glm for common outcomes in cohort studies?
How can I test the difference in area under ROC curve for two Logistic Models?

Analysis of Variance

Graphics

Time Series

Capabilities

See the Stata capabilities page for information about the capabilities of Stata, including Linear models, Binary, count, and limited dependent variables, Resampling and simulation methods, Graphics, Survey methods, Survival analysis

Advanced Statistics - Survey commands and clustering

Advanced Statistics - Other

Other

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