By category
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 |
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 |
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 |
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 |
Extended regression models (ERMs)
|
combine endogenous covariates, sample
selection, and nonrandom treatment
in models for continuous, interval-censored,
binary, and ordinal outcomes •
more |
Generalized linear models (GLMs)
|
ten link functions •
user-defined links •
seven distributions •
ML and IRLS estimation •
nine variance estimators •
seven residuals •
more |
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 |
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 |
ANOVA/MANOVA
|
balanced and unbalanced designs •
factorial, nested, and mixed designs •
repeated measures •
marginal means •
contrasts •
more |
Exact statistics
|
exact logistic and Poisson regression •
exact case–control statistics •
binomial tests •
Fisher’s exact test for r × c tables •
more |
Linearized DSGE models
|
specify models algebraically •
solve models •
estimate parameters •
identification diagnostics •
policy and transition matrices •
IRFs •
dynamic forecasts •
more |
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 |
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 |
Simple maximum likelihood
|
specify likelihood using simple expressions •
no programming required •
survey data •
standard, robust, bootstrap, and jackknife SEs •
matrix estimators •
more |
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 |
Resampling and simulation methods
|
bootstrap •
jackknife •
Monte Carlo simulation •
permutation tests •
more |
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 |
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 |
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 45 estimation commands •
continuous univariate, multivariate, and discrete priors •
add your own models •
convergence diagnostics •
posterior summaries •
hypothesis testing •
model comparison • more |
Power and sample size
|
power • sample size • effect size • minimum detectable effect •
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 |
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 •
more |
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 |
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 |
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 |
Survey methods
|
multistage designs •
bootstrap,
BRR,
jackknife,
linearized, and
SDR variance estimation •
poststratification •
DEFF •
predictive margins •
means,
proportions,
ratios,
totals •
summary tables •
almost all estimators supported •
more |
Cluster analysis
|
hierarchical clustering •
kmeans and kmedian nonhierarchical clustering •
dendrograms •
stopping rules •
user-extensible analyses •
more |
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 • differential item functioning (DIF) • more |
Multivariate methods
|
factor analysis •
principal components •
discriminant analysis •
rotation •
multidimensional scaling •
Procrustean analysis •
correspondence analysis •
biplots •
dendrograms •
user-extensible analyses •
more |
Data management
|
data transformations •
match-merge •
import/export data •
ODBC •
SQL •
Unicode •
by-group processing •
append files •
sort •
row–column transposition •
labeling •
save results •
more |
Graphics
|
lines •
bars •
areas •
ranges •
contours •
confidence intervals •
interaction plots •
survival plots •
publication quality •
customize anything •
Graph Editor •
more |
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 |
Documentation
|
27 manuals •
14,000+ pages •
seamless navigation •
thousands of worked examples •
quick starts •
methods and formulas •
references •
more |
Basic statistics
|
summaries •
cross-tabulations •
correlations •
z and t tests •
equality-of-variance tests •
tests of proportions •
confidence intervals •
factor variables •
more |
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 |
Epidemiology
|
standardization of rates •
case–control •
cohort •
matched case–control •
Mantel–Haenszel •
pharmacokinetics •
ROC analysis •
ICD-10 •
more |
GMM and nonlinear regression
|
generalized method of moments (GMM) •
nonlinear regression •
more
|
Other statistical methods
|
kappa measure of interrater agreement •
Cronbach's alpha •
stepwise regression •
tests of normality •
more
|
Functions
|
statistical •
random-number •
mathematical •
string •
date and time •
more
|
Internet capabilities
|
ability to install new commands •
web updating •
web file sharing •
latest Stata news •
more |
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 |
Programming features
|
adding new commands •
command scripting •
object-oriented programming •
menu and dialog-box programming •
dynamic documents •
Markdown •
Project Manager •
plugins •
more |
Community-contributed commands
|
community-contributed commands for meta-analysis, data management, survival,
econometrics, more |
Embedded statistical computations
Installation Qualification
|
IQ report for regulatory agencies such as the FDA • installation verification |
Accessibility
|
Section 508 compliance,
accessibility for persons with disabilities |
Sample session
New in Stata 15—Latent class analysis •
Bayes prefix •
Combine endogenous regressors, treatment effects, and selection •
Spatial autoregressive models •
Finite mixture models (FMM) •
Markdown—create web pages with intermixed text, Stata output, and graphs •
DSGE models •
Nonlinear multilevel and panel-data models •
Mixed logit choice models •
Multilevel Bayesian analysis •
Nonparametric regression •
Interval-censored survival models •
and much more
