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Linear models
regression • censored outcomes • endogenous regressors • bootstrap, jackknife, and robust and cluster–robust variance • instrumental variables • three-stage least squares • constraints • quantile regression • GLS • more
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Survival analysis
Kaplan–Meier and Nelson–Aalen estimators, • Cox regression (frailty) • parametric models (frailty, random effects) • competing risks • hazards • time-varying covariates • left-, right-, and interval-censoring • Weibull, exponential, and Gompertz models • more
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Mata—Stata's serious programming language
interactive sessions • large-scale development projects • optimization • matrix inversions • decompositions • eigenvalues and eigenvectors • LAPACK engine • real and complex numbers • string matrices • interface to Stata datasets and matrices • numerical derivatives • object-oriented programming • more
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Panel/longitudinal data
random and fixed effects with robust standard errors • linear mixed models • random-effects probit • GEE • random- and fixed-effects Poisson • dynamic panel-data models • instrumental variables • panel unit-root tests • more
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Bayesian analysis
thousands of built-in models • univariate and multivariate models • linear and nonlinear models • multilevel models • continuous, binary, ordinal, and count outcomes • bayes:prefix for 46 estimation commands • continuous univariate, multivariate, and discrete priors • add your own models • multiple chains • convergence diagnostics • posterior summaries • hypothesis testing • model fit • model comparison • predictions • more
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Graphical user interface
menus and dialogs for all features • Data Editor • Variables Manager • Graph Editor • Project Manager • Do-file Editor • Clipboard Preview Tool • multiple preference sets • more
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Multilevel mixed-effects models
continuous, binary, count, and survival outcomes • two-, three-, and higher-level models • generalized linear models • nonlinear models • random intercepts • random slopes • crossed random effects • BLUPs of effects and fitted values • hierarchical models • residual error structures • DDF adjustments • support for survey data • more
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Meta-analysis
effect sizes • common, fixed, and random effects • forest, funnel, and more plots • subgroup and cumulative analysis • meta-regression • small-study effects • publication bias • more
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Documentation
31 manuals • 15,000+ pages • seamless navigation • thousands of worked examples • quick starts • methods and formulas • references • more
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Binary, count, and limited outcomes
logistic, probit, tobit • Poisson and negative binomial • conditional, multinomial, nested, ordered, rank-ordered, and stereotype logistic • multinomial probit • zero-inflated and left-truncated count models • selection models • marginal effects • more
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Power, precision, and sample size
power • sample size • effect size • minimum detectable effect • CI width • means • proportions • variances • correlations • ANOVA • regression • cluster randomized designs • case–control studies • cohort studies • contingency tables • survival analysis • balanced or unbalanced designs • results in tables or graphs • more
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Basic statistics
summaries • cross-tabulations • correlations • z and t tests • equality-of-variance tests • tests of proportions • confidence intervals • factor variables • more
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Choice models
discrete choice • rank-ordered alternatives • conditional logit • multinomial probit • nested logit • mixed logit • panel data • case-specific and alternative-specific predictors • interpret results—expected probabilities, covariate effects, comparisons across alternatives • more
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Treatment effects/Causal inference
inverse probability weight (IPW) • doubly robust methods • propensity-score matching • regression adjustment • covariate matching • multilevel treatments • endogenous treatments • average treatment effects (ATEs) • ATEs on the treated (ATETs) • potential-outcome means (POMs) • continuous, binary, count, fractional, and survival outcomes • panel data • more
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Nonparametric methods
nonparametric regression • Wilcoxon–Mann–Whitney, Wilcoxon signed ranks, and Kruskal–Wallis tests • Spearman and Kendall correlations • Kolmogorov–Smirnov tests • exact binomial CIs • survival data • ROC analysis • smoothing • bootstrapping • more
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Extended regression models (ERMs)
endogenous covariates • sample selection • nonrandom treatment • panel data • account for problems alone or in combination • continuous, interval-censored, binary, and ordinal outcomes • more
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Lasso
lasso • elastic net • model selection • prediction • inference • continuous, binary, and count outcomes • cross-validation • adaptive lasso • double selection • partialing out • cross-fit partialing out • double machine learning • endogenous covariates • more
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GMM and nonlinear regression
generalized method of moments (GMM) • nonlinear regression • more
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Generalized linear models (GLMs)
ten link functions • user-defined links • seven distributions • ML and IRLS estimation • nine variance estimators • seven residuals • more
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SEM (structural equation modeling)
graphical path diagram builder • standardized and unstandardized estimates • modification indices • direct and indirect effects • continuous, binary, count, ordinal, and survival outcomes • multilevel models • random slopes and intercepts • factor scores, empirical Bayes, and other predictions • groups and tests of invariance • goodness of fit • handles MAR data by FIML • correlated data • survey data • more
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Simple maximum likelihood
specify likelihood using simple expressions • no programming required • survey data • standard, robust, bootstrap, and jackknife SEs • matrix estimators • more
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Finite mixture models (FMMs)
fmm: prefix for 17 estimators • mixtures of a single estimator • mixtures combining multiple estimators or distributions • continuous, binary, count, ordinal, categorical, censored, truncated, and survival outcomes • more
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Latent class analysis
binary, ordinal, continuous, count, categorical, fractional, and survival items • add covariates to model class membership • combine with SEM path models • expected class proportions • goodness of fit • predictions of class membership • more
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Programmable maximum likelihood
user-specified functions • NR, DFP, BFGS, BHHH • OIM, OPG, robust, bootstrap, and jackknife SEs • Wald tests • survey data • numeric or analytic derivatives • more
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Spatial autoregressive models
spatial lags of dependent variable, independent variables, and autoregressive errors • fixed and random effects in panel data • endogenous covariates • analyze spillover effects • more
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Multiple imputation
nine univariate imputation methods • multivariate normal imputation • chained equations • explore pattern of missingness • manage imputed datasets • fit model and pool results • transform parameters • joint tests of parameter estimates • predictions • more
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Other statistical methods
kappa measure of interrater agreement • Cronbach's alpha • stepwise regression • tests of normality • more
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ANOVA/MANOVA
balanced and unbalanced designs • factorial, nested, and mixed designs • repeated measures • marginal means • contrasts • more
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Survey methods
multistage designs • bootstrap, BRR, jackknife, linearized, and SDR variance estimation • poststratification • raking • calibration • DEFF • predictive margins • means, proportions, ratios, totals • summary tables • almost all estimators supported • more
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Functions
statistical • random-number • mathematical • string • date and time • regular expressions • Unicode • more
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Exact statistics
exact logistic and Poisson regression • exact case–control statistics • binomial tests • Fisher’s exact test for r × c tables • more
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Cluster analysis
hierarchical clustering • kmeans and kmedian nonhierarchical clustering • dendrograms • stopping rules • user-extensible analyses • more
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Internet capabilities
ability to install new commands • web updating • web file sharing • latest Stata news • more
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Epidemiology
standardization of rates • case–control • cohort • matched case–control • Mantel–Haenszel • pharmacokinetics • ROC analysis • ICD-10 • more
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IRT (item response theory)
binary (1PL, 2PL, 3PL), ordinal, and categorical response models • item characteristic curves • test characteristic curves • item information functions • test information functions • multiple-group models • differential item functioning (DIF) • more
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Community-contributed commands
search and download thousands of free additions • discover new features in the Stata Journal • share commands by posting to the SSC • discuss community-contributed commands on Statalist • more
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DSGE models
specify models algebraically • solve models • estimate parameters • identification diagnostics • policy and transition matrices • IRFs • dynamic forecasts • more
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Multivariate methods
factor analysis • principal components • discriminant analysis • rotation • multidimensional scaling • Procrustean analysis • correspondence analysis • biplots • dendrograms • user-extensible analyses • more
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Embedded statistical computations
Numerics by Stata
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Tests, predictions, and effects
Wald tests • LR tests • linear and nonlinear combinations • predictions and generalized predictions • marginal means • least-squares means • adjusted means • marginal and partial effects • forecast models • Hausman tests • more
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Data wrangling
data transformations • data frames • match-merge • import/export data • ODBC • SQL • Unicode • by-group processing • append files • sort • row–column transposition • labeling • save results • more
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Installation Qualification
Q report for regulatory agencies such as the FDA • installation verification
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Contrasts, pairwise comparisons, and margins
compare means, intercepts, or slopes • compare with reference category, adjacent category, grand mean, etc. • orthogonal polynomials • multiple-comparison adjustments • graph estimated means and contrasts • interaction plots • more
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Reporting
reproducible reports • Word • Excel • PDF • HTML • dynamic documents • Markdown • Stata results and graphs • SVG • EPS • PNG • TIF • formatted text and tables • more
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Accessibility
Section 508 compliance, accessibility for persons with disabilities
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Resampling and simulation methods
bootstrap • jackknife • Monte Carlo simulation • permutation tests • more
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Graphics
lines • bars • areas • ranges • contours • confidence intervals • interaction plots • survival plots • publication quality • customize anything • Graph Editor • more
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Sample session
A sample session of Stata for Mac, Unix, or Windows.
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Time series
ARIMA • ARFIMA • ARCH/GARCH • VAR • VECM • multivariate GARCH • unobserved-components model • dynamic factors • state-space models • Markov-switching models • business calendars • tests for structural breaks • threshold regression • forecasts • impulse–response functions • unit-root tests • filters and smoothers • rolling and recursive estimation • more
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Programming features
adding new commands • scripting • object-oriented programming • menu and dialog-box programming • dynamic documents • Markdown • Project Manager • Python integration • Java plugins • C/C++ plugins • more
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