Fast. Accurate. Easy to use. Stata is a complete, integrated software package that provides all your data science needs—data manipulation, visualization, statistics, and automated reporting.

Introducing **StataNow™**, Stata’s continuous release version, find out more at the tab below

## Why Stata?

Fast. Accurate. Easy to use. Stata is a complete, integrated software package that provides all your data science needs—data manipulation, visualization, statistics, and automated reporting.

- Master your data
- Broad suite of statistical features
- Publication-quality graphics
- Automated reporting
- Truly reproducible research
- Real documentation
- Trusted
- Continuously Updated
- Easy to use
- Easy to grow with
- Easy to automate
- Easy to extend
- Advanced programming
- Automatic multicore support
- Community-contributed features
- World-class technical support
- Cross-platform compatible
- Widely used
- Comprehensive resources
- Vibrant community
- Affordable

## Master your data

Stata’s data management features give you complete control.

- Frames — manage multiple datasets simultaneously
- Import, export
- JDBC, ODBC, SQL
- Sort, match, merge, join, append, create
- Built-in spreadsheet
- Unicode
- Process text or binary data
- Access data locally or on the web
- Collect statistics across groups
- BLOBs—strings that can hold entire documents
- Billions of observations
- Hundreds of thousands of variables
- Survival data, panel data, multilevel data, survey data, discrete choice data, multiple-imputation data, categorical data, time-series data

And much more, to support all your data science needs.

## Publication-quality graphics

**Stata makes it easy to generate publication-quality, distinctly styled graphs.**

You can point and click to create a custom graph. Or you can write scripts to

produce hundreds or thousands of graphs in a reproducible manner.

Export graphs to EPS or TIFF for publication, to

PNG or SVG for the web, or to PDF for viewing. With the

integrated Graph Editor,

you click to change anything about your graph or to add titles, notes, lines, arrows, and text.

## Automated reporting

**All the tools you need to automate reporting your results.**

- Dynamic Markdown documents
- Create Word documents
- Create PDF documents
- Create Excel files
- Customizable tables
- Schemes for graphics
- Word, HTML, PDF, SVG, PNG

## Truly reproducible research

**Lots of folks talk about reproducible research.
Stata has been dedicated to it for over 30 years.**

We constantly add new features; we have even fundamentally changed language elements. No matter. Stata is the only statistical package with integrated versioning. If you wrote a script to perform an analysis in 1985, that same script will still run and still produce the same results today. Any dataset you created in 1985, you can read today. And the same will be true in 2050. Stata will be able to run anything you do today.

We take reproducibility seriously.

## Real documentation

**When it comes time to perform your analyses or understand the methods you are using, Stata does not leave you high and dry or ordering books to learn every detail.**

Each of our data management features is fully explained and documented and shown in practice on real examples. Each estimator is fully documented and includes several examples on real data, with real discussions of how to interpret the results. The examples give you the data so you can work along in Stata and even extend the analyses. We give you a Quick start for every feature, showing some of the most common uses. Want even more detail? Our Methods and formulas sections provide the specifics of what is being computed, and our References point you to even more information.

Stata is a big package and so has lots of documentation – over 18,000 pages in 35 manuals. But don’t worry, type **help** *my topic*, and Stata will search its keywords, indexes, and even community-contributed packages to bring you everything you need to know about *your topic*. Everything is available right within Stata.

## Trusted

**We don’t just program statistical methods, we validate them.**

The results you see from a Stata estimator rest on comparisons with other estimators, Monte Carlo simulations of consistency and coverage, and extensive testing by our statisticians. Every Stata we ship has passed a certification suite that includes 4.1 million lines of testing code that produces 5.8 million lines of output. We certify every number and piece of text from those 5.8 million lines of output.

## Continuously Updated

**Staying on the most up-to-date version of Stata is now easier than ever.**

StataCorp continually develops new features to enhance Stata software, from the latest statistical methods to the best in reporting, data visualization, and the user interface. With ** StataNow™** you do not have to wait until the next major release to begin using new features. We will release new features as soon as they are ready so that you can take advantage of them right away.

## Easy to use

All of Stata’s features can be accessed through

menus, dialogs, control panels, a Data Editor, a Variables Manager, a Graph Editor, and even an SEM Diagram Builder.

You can point and click your way through any analysis.

If you don’t want to write commands and scripts, you don’t have to.

Even when you are pointing and clicking, you can record all your

results and later include them in reports. You can even save the

commands created by your actions and reproduce your complete

analysis later.

## Easy to grow with

Stata’s commands for performing tasks are intuitive and easy to learn. Even better, everything you learn about performing a task can be applied to other tasks. For example, you simply add **if gender==”female”** to any command to limit your analysis to females in your sample. You simply add vce(robust) to any estimator to obtain standard errors and hypothesis tests that are robust to many common assumptions.

The consistency goes even deeper. What you learn about data management commands often applies to estimation commands, and vice-versa. There is also a full suite of postestimation commands to perform hypothesis tests, form linear and nonlinear combinations, make predictions, form contrasts, and even perform marginal analysis with interaction plots. These commands work the same way after virtually every estimator.

Sequencing commands to read and clean data, then to perform statistical tests and estimation, and finally to report results is at the heart of reproducible research. Stata makes this process accessible to all researchers.

## Easy to automate

Everyone has tasks that they do all the time—create a particular kind of variable, produce a particular table, perform a sequence of statistical steps, compute an RMSE, etc. The possibilities are endless. Stata has thousands of built-in procedures, but you may have tasks that are relatively unique or that you want done in a specific way.

If you have written a script to perform your task on a given dataset, it is easy to transform that script into something that can be used on all your datasets, on any set of variables, and on any set of observations.

## Easy to extend

Some of the things you automate may be so useful that you want to share them with colleagues or even make them available to all Stata users. That’s also easy. With just a little code, you can turn an automation script into a Stata command. A command that supports standard features that Stata’s official commands support. A command that can be used in the same way official commands are used.

## Advanced programming

Stata also includes an advanced programming language—Mata.

**Mata has the structures, pointers, and classes that you expect in your programming language and adds direct support for matrix programming.**

Though you don’t need to program to use Stata, it is comforting to know that a fast and complete programming language is an integral part of Stata. Mata is both an interactive environment for manipulating matrices and a full development environment that can produce compiled and optimized code. It includes special features for processing panel data, performs operations on real or complex matrices, provides complete support for object-oriented programming, and is fully integrated with every aspect of Stata. Stata also has comprehensive Python integration, allowing you to harness all the power of Python directly from your Stata code.

Stata also has **PyStata**, which provides comprehensive Python integration, allowing you to harness all the power of Python directly from your Stata code and to harness all the power of Stata from your Python code.

Stata even let’s you incorporate C, C++, and Java plugins in your Stata programs via a native API for each language. And you can even embed Java code directly in your Stata code!

**Get the most out of your multicore computer.
No other statistical software comes close.
Enjoy the new features of Stata at top speed.**

## Community-contributed features

**Stata is so programmable that developers and users add new features every day to respond to the growing demands of today’s researchers.**

With Stata’s Internet capabilities, new features and official updates can be installed over the Internet with a single click.

## World-class technical support

**All registered users of the current release of Stata (Stata 18) are eligible for free technical support. If you have not registered your copy of Stata, please fill out the online registration form.**

We have a dedicated staff of expert Stata programmers and statisticians to answer your technical questions. From tricky data management solutions to getting your graph looking just right and from explaining a robust standard error to specifying your multilevel model, we have your answers.

## Cross-platform compatible

**Stata will run on Windows, Mac, and Linux/Unix computers; however, our licenses are not platform specific.**

That means if you have a Mac laptop and a Windows desktop, you don’t need two separate licenses to run Stata. You can install your Stata license on any of the supported platforms. Stata datasets, programs, and other data can be shared across platforms without translation. You can also quickly and easily import datasets from other statistical packages, spreadsheets, and databases.

## Widely used

**Used by researchers for more than 30 years, Stata provides everything you need for data science—data manipulation, visualization, statistics, and automated reporting.**

Select your discipline and see how Stata can work for you.

#### Behavioral sciences

#### Education

#### Institutional research

#### Public health

#### Biostatistics

#### Epidemiology

#### Medicine

#### Public policy

#### Data science

#### Finance, business, and marketing

#### Political science

#### Sociology

#### Economics

Can’t find your discipline? See who else is using Stata »

Stata is distributed in more than 180 countries. Our authorized distributors offer services such as basic technical support and training, and carry Stata inventory so delivery is fast.

## Comprehensive resources

##### Video tutorials

Stata’s YouTube channel is the perfect resource for new users to Stata, users wanting to learn a new feature in Stata, and professors looking for aids in teaching with Stata. We have over 300 videos on our YouTube channel that have been viewed over 6 million times by Stata users wanting to learn how to label variables, merge datasets, create scatterplots, fit regression models, work with time-series or panel data, fit multilevel models, analyze survival data, perform Bayesian analylsis, and use many other features of Stata. View the complete list of videos.

##### Stata Blog

We write the official Stata Blog, Not Elsewhere Classified (NEC),

to share things we think you will find instructive, informative, or just plain

entertaining. We have written about how to interpret statistical results;

export results into Word, Excel, and LaTeX; perform Monte Carlo simulations;

program your own estimators; and more. We also post service and product

announcements. Individually signed, the articles in NEC are written by the

same people who develop and support Stata.

##### Free Stata webinars

Stata webinars offer something for everyone. Those new to Stata

will get a head start when they join our

Ready. Set. Go Stata

webinar. Both new and experienced users will want to join

our Tips and Tricks webinar

and our one-hour feature webinars; each one provides an in-depth look at

one of Stata’s statistical, graphical, data management, or reporting

features.

##### Training

A multitude of

training options are available to

become proficient at Stata quickly. Stata provides hands-on classroom and web-based

training courses, customized on-site training courses, and online

training through NetCourses, webinars, and video tutorials.

##### Stata Press

Stata Press®

publishes books, manuals, and journals about Stata and general statistics topics for professional researchers of all disciplines. Stata Press® publications, along with books recommended by StataCorp, can be found in the Stata Bookstore.

##### Stata News

The *Stata News*

is a free publication with columns such as the popular

*In the Spotlight*, where Stata developers give insight into

specific Stata features, and the *User’s corner*, where we share

unique, helpful, and fun contributions from the user community.

The *News* also contains announcements such as new releases and

updates, training schedules, new books, Conferences, and Users Group

meetings.

##### Stata Journal

The *Stata Journal* is a quarterly publication containing articles about statistics, data analysis, teaching methods, and effective use of Stata’s language. The Journal publishes reviewed papers together with shorter notes and comments, regular columns, book reviews, and other materials of interest to researchers applying statistics in a variety of disciplines.

## Vibrant community

**Stata Conferences**

Whether you are a beginner or an expert, you will find something just for you at Stata conferences, which are held each year in various

locations around the world. These meetings showcase in-depth

presentations from StataCorp experts and experienced Stata users

that focus on helping you use Stata more effectively.

**Statalist**

A great resource for users is Statalist, a forum where more than

40,000 Stata users exchange roughly 4,500 postings and responses each

month. Statalist is run and moderated by Stata users and maintained by

StataCorp.

**User comments**

Our users love to share how great Stata is, so we’d like to show you!

When we receive nice comments about Stata, we post them here. If you

think Stata is great too, send us an email with your comment, and we may

share it with the Stata community.

## Affordable

**Stata is not sold in modules, which means you get everything in one package!**

Stata offers several purchase options to fit your budget. Annual and multiyear subscriptions ensure you always have access to the latest features. Contact a sales

representative or browse our products to find out more about our affordable options. You can also download a product brochure.

What is **StataNow?**

First and foremost, StataNow is Stata. It is a continuous-release version of Stata that offers new features as soon as they are ready. StataNow is the result of our ongoing effort to deliver the best Stata—the most current Stata—to our users.

Before StataNow, most new features became available only at the time of a major release such as Stata 17, Stata 18, and so on. StataNow provides access to new features sooner. For instance, StataNow contains features that will also be part of a future major release, Stata 19.

To discover **What’s included in StataNow™**, click the ‘New Features’ tab above

The features in StataNow are **fully tested, fully certified, well documented, version controlled** (if needed), as well as polished to our customary high quality. These features are prioritized in the development cycle to be available as soon as they are ready so that users can take advantage of them right away. As always, all versions of Stata are updated regularly with any corrections and necessary improvements. You can view a list of all additions to Stata and StataNow since we shipped Stata 18.

The new features in StataNow are released continuously throughout the current release until the next major release. They are not released according to any preset schedule. All StataNow features are marked as such throughout the Stata website and the Stata documentation.

Because StataNow is Stata, when we mention “Stata” throughout our website and documentation, we also mean “StataNow”. We will be specific about StataNow for features available only in StataNow. And because StataNow is Stata, it is available in all editions (StataNow/MP, StataNow/SE, and StataNow/BE) and on all supported platforms (Windows, Mac, and Linux). Throughout the website and documentation, we will usually refer to just Stata/MP, Stata/SE, and Stata/BE for simplicity. If you have a StataNow license as described below, you can take this to mean StataNow/MP, StataNow/SE, or StataNow/BE.

How can I get **StataNow?**

All annual license holders have access to StataNow, regardless of whether you have an annual license or multiyear license or whether your institution has a site license. You can access the latest StataNow features by simply typing **update all** in the Command window or by asking your system administrator to update your Stata. Existing Stata 18 users may need to type **update all** twice. The first update will give you a Stata that knows how to update itself to StataNow. The second update will be StataNow. Then type help whatsnew to see the list of all features.

**New users** can obtain StataNow online, by** navigating to ‘purchase or upgrade’ on this page**

If you have **maintenance** for your license, please **contact us** via email, phone or live chat, to obtain new download and license information for StataNow.

If you have a perpetual license without maintenance or your maintenance or license has expired, contact us for your options.

How do I know if I already have **StataNow?**

When you start Stata, you will see **StataNow** on the splash screen. You can also type **about** and you will see **StataNow** on the first line.

How do I continue receiving new features in **StataNow?**

We are adding new features to StataNow continuously. To access these features, all you (or your system administrator) need to do is type **update all** in the Command window in StataNow. Then type **help whatsnew** to see the chronological list of all features.

Please click here to purchase or upgrade Stata, or send us a message using the form below.

Students may purchase **Stata/MP**, **Stata/SE** and **Stata/BE **at a discounted price. For more information about available licence types, click here.

Stata is a complete, integrated statistical package that provides everything you need for data analysis, data management, and graphics. Stata is not sold in modules, which means you get everything you need in one package.

Whether you’re a student or a seasoned research professional, a range of Stata packages are available and designed to suit all needs.

All of the following editions of Stata have the same complete set of commands and features and manuals included as PDF documentation within Stata.

Stata/MP is the fastest and largest edition of Stata. Virtually any current computer can take advantage of the advanced multiprocessing of Stata/MP. This includes the Intel i3, i5, i7, i9, Xeon, and Celeron, and AMD multi-core chips. On dual-core chips, Stata/MP runs 40% faster overall and 72% faster where it matters, on the time-consuming estimation commands. With more than two cores or processors, Stata/MP is even faster.

Stata/MP is faster-much faster. Stata/MP lets you analyze data in one-half to two-thirds of the time compared to Stata/SE on inexpensive dual-core laptops and in one-quarter to one-half the time on quad-core desktops and laptops.

Stata/MP runs even faster on multiprocessor servers. Stata/MP supports up to 64 processors/cores.

Speed is often most crucial …” with the updated version “Speed is often most crucial when performing computationally intense estimation procedures. A few of Stata’s estimation procedures, including linear regression, are nearly perfectly parallelized, meaning they run twice as fast on two cores, four times as fast on four cores, eight times as fast on eight cores, and so on. Some estimation commands can be parallelized more than others. Taken at the median, estimation commands run 1.8 times faster on 2 cores, 2.9 times faster on 4 cores, and 4.1 times faster on 8 cores.

Stata/MP is 100% compatible other editions of Stata. Analyses do not have to be reformulated or modified in any way to obtain Stata/MP’s speed improvements.

Stata/MP is available for the following operating systems:

- Windows (64-bit processors);
- macOS (64-bit Intel processors);
- Linux (64-bit processors);

To run Stata/MP, you can use a desktop computer with a dual-core or quad-core processor, or you can use a server with multiple processors. Whether a computer has separate processors or one processor with multiple cores makes no difference. More processors or cores makes Stata/MP run faster.

For more advice on purchasing/upgrading to Stata/MP or for hardware queries, please contact our sales team.

Stata/SE and Stata/BE differ only in the dataset size that each can analyse. Stata/SE and Stata/MP can fit models with more independent variables than Stata/BE (up to 10,998). Stata/SE can analyse up to 2 billion observations.

Stata/BE allows datasets with as many as 2,048 variables. The maximum number of observations is 2.14 billion. Stata/BE can have at most 798 independent variables in a model.

### Comparison of features

#### Product Features

#### Stata/BE (Basic Edition)

#### Stata/SE (Standard Edition)

#### Stata/MP

Maximum number of variables

2,048

32,767

120,000

Maximum number of observations

2.14 billion

2.14 billion

Up to 20 billion

Maximum number of independent variables

798

10,998

65,532

Multicore support

Time to run logistic regression with 5 million obs and 10 covariates

**1-core**

10.0 sec

**1-core**

10.0 sec

**2 core**

5.0 sec

**4 core**

2.6 sec

**4+**

even faster

Complete suite of statistical features

Publication-quality graphics

Matrix programming language

Complete PDF documentation

Exceptional technical support

Includes within-release updates

64-bit version available

Windows, Mac, or Unix

Memory requirements

1 GB

2 GB

4 GB

Disk space requirements

2 GB

2 GB

2 GB

#### For Business License terms and options please click here.

#### For Educational License terms and options please click here.

Find out all about Stata’s expansive range of statistical features using the table of contents below. Each section links to further details and examples to help users get the best out of their software.

## New Features in StataNow™

**StataNow** brings a host of new features over and above those released in Stata 18, find out more below

## New Features in Stata

Stata has something for everyone. Below we list the highlights of the latest Stata 18 release. This release is unique because most of the new features can be used by researchers in every discipline.

## Stata Videos

##### Quick Tips

##### Recently added

Tour of the Stata 18 interface

PDF documentation in Stata 18

Modifying graphs using the Graph Editor

Probit regression with categorical covariates

Probit regression with continuous covariates

Probit regression with categorical and continuous covariates

What’s it like–Getting started in Stata

Tour of the Stata 18 interface New

PDF documentation in Stata 18 New

##### Stata basics

##### Tour of what’s new in Stata

Tour of the Stata interface

PDF documentation in Stata

Automatic production of web pages from dynamic Markdown documents

Create PDF reports from within Stata

Create Word documents from within Stata

Extended regression models (ERMs)

Finite mixture models (FMMs)

Heteroskedastic linear regression

Import FRED (Import Federal Reserve Economic Data)

Interval-censored survival models

Latent class analysis (LCA)

Linearized DSGEs

Mixed logit models

Multilevel tobit and interval regression

Multiple-group generalized SEM

Nonlinear mixed-effects models

Nonparametric regression

Panel-data cointegration tests

Poisson with sample selection

Power analysis for cluster randomized designs and linear regression

A prefix for Bayesian regression

Spatial autoregressive models

Tests for multiple breaks in time series

Threshold regression

Transparency in Stata graphs

Zero-inflated ordered probit

##### Data management

Loading, saving, importing, and exporting data

Import FRED (Import Federal Reserve Economic Data)

Copy/paste data from Excel into Stata

Import Excel data into Stata

Saving estimation results to Excel

Importing delimited data

Changing and renaming variables

Convert a string variable to a numeric variable

Convert categorical string variables to labeled numeric variables

Create a categorical variable from a continuous variable

Convert missing value codes to missing values

Combining data

How to merge files into a single dataset

How to append files into a single dataset

Creating and dropping variables

Create a new variable that is calculated from other variables

Identify and replace unusual data values

Create a date variable from a date stored as a string

Optimize the storage of variables

Round a continuous variable

Stata’s Expression Builder

Examining data

Identify and remove duplicate observations

Labeling, display formats, and notes

Label variables

Label the values of categorical variables

Change the display format of a variable

Add notes to a variable

Reshaping datasets

Reshape data from wide format to long format

Reshape data from long format to wide format

Strings

Unicode

Tour of long strings and BLOBs

##### Graphics

##### Automated document and report creation

##### Bayesian analysis

A prefix for Bayesian regression

Bayesian linear regression using the bayes prefix

Bayesian linear regression using the bayes prefix: How to specify custom priors

Bayesian linear regression using the bayes prefix: Checking convergence of the MCMC chain>

Bayesian linear regression using the bayes prefix: How to customize the MCMC chain>

Bayesian analysis

Graphical user interface for Bayesian analysis

Introduction to Bayesian statistics, part 1: The basic concepts

Introduction to Bayesian statistics, part 2: MCMC and the Metropolis-Hastings algorithm

##### Binary, ordinal, count, and fractional outcomes

Mixed logit models

Poisson with sample selection

Zero-inflated ordered probit

Logistic regression in Stata, part 1: Binary predictors

Logistic regression in Stata, part 2: Continuous predictors

Logistic regression in Stata, part 3: Factor variables

Regression models for fractional data

Probit regression with categorical covariates New

Probit regression with continuous covariates New

Probit regression with categorical and continuous covariates New

##### Case–control studies

##### Classical hypothesis tests

##### Descriptive data science, tables, and cross-tabulations

##### Dynamic stochastic general equilibrium models (DSGEs)

##### Econometrics

Linearized DSGEs

Nonparametric regression

Spatial autoregressive models

Heteroskedastic linear regression

Mixed logit models

Multilevel tobit and interval regression

Extended regression models (ERMs)

Extended regression models, part 1: Endogenous covariates

Extended regression models, part 2: Nonrandom treatment assignment

Extended regression models, part 3: Endogenous sample selection

Extended regression models, part 4: Interpreting the model

Probit regression with categorical covariates New

Probit regression with continuous covariates New

Probit regression with categorical and continuous covariates New

##### Effect sizes

##### Extended regression models (ERMs)

##### Factor variables

##### IRT (item response theory)

IRT (item response theory) models

Item response theory using Stata: One-parameter logistic (1PL) models

Item response theory using Stata: Two-parameter logistic (2PL) models

Item response theory using Stata: Three-parameter logistic (3PL) models

Item response theory using Stata: Nominal response (NRM) models

Item response theory using Stata: Rating scale (RSM) models

Item response theory using Stata: Graded response (GRM) models

##### Latent class analysis and finite mixture models

##### Linear models

##### Marginal means, predictive margins, and contrasts

Introduction to margins in Stata, part 1: Categorical variables

Introduction to margins in Stata, part 2: Continuous variables

Introduction to margins in Stata, part 3: Interactions

Profile plots and interaction plots in Stata, part 1: A single categorical variable

Profile plots and interaction plots in Stata, part 2: A single continuous variable

Profile plots and interaction plots in Stata, part 3: Interactions of categorical variables

Profile plots and interaction plots in Stata, part 4: Interactions of continuous and categorical variables

Profile plots and interaction plots in Stata, part 5: Interactions of two continuous variables

##### Multilevel mixed-effects models

Multilevel tobit and interval regression

Nonlinear mixed-effects models

Introduction to multilevel linear models, part 1

Introduction to multilevel linear models, part 2

Tour of multilevel GLMs

Multilevel models for survey data

Multilevel survival analysis

Small-sample inference for mixed-effects models

##### Multiple imputation

##### Nonparametric data science

##### Panel data

##### Power and sample size

Power analysis for cluster randomized designs and linear regression

Tour of power and sample size

A conceptual introduction to power and sample size

New power and sample-size features in Stata 14

Sample-size calculation for comparing a sample mean to a reference value

Power calculation for comparing a sample mean to a reference value

Find the minimum detectable effect size for comparing a sample mean to a reference value

Sample-size calculation for comparing a sample proportion to a reference value

Power calculation for comparing a sample proportion to a reference value

Minimum detectable effect size for comparing a sample proportion to a reference value

How to calculate sample size for two independent proportions

How to calculate power for two independent proportions

How to calculate minimum detectable effect size for two independent proportions

Sample-size calculation for comparing sample means from two paired samples

Power calculation for comparing sample means from two paired samples

How to calculate the minimum detectable effect size for comparing the means from two paired samples

Sample-size calculation for one-way analysis of variance

Power calculation for one-way analysis of variance

Minimum detectable effect size for one-way analysis of variance

##### SEM (structural equation modeling)

##### Spatial autoregressive models

##### Statistical calculators

##### Survey data analysis

Basic introduction to the analysis of complex survey data

Specifying the design of your survey data

How to download, import, and merge multiple datasets from the NHANES website

How to download, import, and prepare data from the NHANES website

Multilevel models for survey data

Survey data support for SEM

##### Survival analysis

Interval-censored survival models

Learn how to set up your data for survival analysis

How to describe and summarize survival data

How to construct life tables

How to calculate incidence rates and incidence-rate ratios

How to calculate the Kaplan-Meier survivor and Nelson-Aalen cumulative hazard functions

How to graph survival curves

How to test the equality of survivor functions using nonparametric tests

How to fit a Cox proportional hazards model and check proportional-hazards assumption

Multilevel survival analysis

Panel-data survival models

Survival models for SEM

Treatment effects for survival models

##### Time series

Import FRED (Import Federal Reserve Economic Data)

Threshold regression

Tests for multiple breaks in time series

Tour of forecasting

Formatting and managing dates

Time-series operators

Correlograms and partial correlograms

Line graphs and tin()

Introduction to ARMA/ARIMA models

Markov-switching models

Moving-average smoothers

##### Treatment effects

Introduction to treatment effects in Stata: Part 1

Introduction to treatment effects in Stata: Part 2

Treatment effects: Regression adjustment

Treatment effects: Inverse-probability weighting

Treatment effects: Inverse-probability weighted regression adjustment

Treatment effects: Augmented inverse-probability weighting

Treatment effects: Nearest-neighbor matching

Treatment effects: Propensity-score matching

Treatment effects for survival models

Endogenous treatment effects

All editions of Stata run on dual-core, multi-core and multi-processor computers.

### Stata for Windows: Stata requires 64-bit Windows for x86-64 processors made by Intel® and AMD

- Windows 11 *
- Windows 10 *
- Windows Server 2022, 2019, 2016, 2012R2

*Stata requires 64-bit Windows for x86-64 processors made by Intel® or AMD (Core i3 equivalent or better)

### Stata for Mac

- Mac with Apple Silicon or 64-bit Intel processor
- MacOS 11.0 (Big Sur) or newer for Macs with Apple Silicon and MacOS 10.13 (High Sierra) or newer for Macs with 64-bit Intel processors

### Stata for Linux

**Linux:**Any 64-bit (x86-64 or compatible) running Linux.- Minimum requirements include the GNU C library (glib) 2.17 or better and libcurl4
**For xstata**, you need to have GTK 2.24 installed

### Hardware requirements

- Minimum of 1 GB of RAM for Stata/BE, 2GB for Stata/SE and 4GB for Stata/MP
- Minimum of 2 GB of disk space for all editions

### Stata 18 Documentation

Every installation of Stata includes all the documentation in PDF format. Stata’s documentation consists of over 18,000 pages detailing each feature in Stata including the methods and formulas and fully worked examples. You can transition seamlessly across entries using the links within each entry.

#### Stata Manuals

- Reporting Reference Manual
- Choice Models Reference Manual
- Lasso Reference Manual
- Meta-Analysis Reference Manual
- Base Reference Manual
- Bayesian Analysis Reference Manual
- Data Management Reference Manual
- Functions Reference Manual
- Graphics Reference Manual
- Item Response Theory Reference Manual
- Longitudinal-Data/Panel-Data Reference Manual
- Mata Matrix Programming
- Multilevel Mixed-Effects Reference Manual
- Multiple-Imputation Reference Manual
- Multivariate Data Science Reference Manual
- Power and Sample-Size Reference Manual
- Programming Reference Manual
- Structural Equation Modeling Reference Manual
- Survey Data Reference Manual
- Survival Analysis Reference Manual
- Time Series Reference Manual
- Causal Inference and Treatment Effects Estimation Reference Manual
- Glossary and Index
- Extended Regression Models
- Finite Mixture Models
- Linearized Dynamic Stochastic General Equilibrium
- Spatial Autoregressive Models
- Adaptive Design: Group Sequential Trials
- Bayesian Model Averaging

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