Stata-Features

Survival-Analyse
Kaplan-Meier and Nelson-Aalen estimators | Cox regression (frailty) | parametric models (frailty, random effects) | competing risks | hazards | time-varying covariates | left- and right-censoring, Weibull, exponential, and Gompertz models

Bayessche Analyse
thousands of built-in models | univariate and multivariate models | linear and nonlinear models | continuous, binary, ordinal, and count outcomes | continuous univariate, multivariate, and discrete priors | add your own models | adaptive Metropolis-Hastings sampling | Gibbs sampling | convergence diagnostics | posterior summaries | hypothesis testing | model comparison

Teststärke und Stichprobenumfang
power | sample size | effect size | minimum detectable effect | means | proportions | variances | correlations | ANOVA | case-control studies | cohort studies | contingency tables | survival analysis | balanced or unbalanced designs | results in tables or graphs

Treatment-Effekte
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

Strukturgleichungsmodelle (SEM)
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 | factors scores, empirical Bayes, and other predictions | groups and tests of invariance | goodness of fit | handles MAR data by FIML | correlated data | survey data

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

Survey-Methoden
multistage designs | bootstrap, BRR, jackknife, linearized, and SDR variance estimation | poststratification | DEFF | predictive margins | means, proportions, ratios, totals | summary tables | regression, instrumental variables, probit, Cox regression

Cluster-Analyse
hierarchical clustering | kmeans and kmedian nonhierarchical clustering | dendrograms | stopping rules | user-extensible analyses

Probabilistische Testtheorie (Item Response Theory, IRT)
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)

Multivariate Methoden
factor analysis | principal components | discriminant analysis | rotation | multidimensional scaling | Procrustean analysis | correspondence analysis | biplots | dendrograms | user-extensible analyses

Nicht-parametrische Methoden
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

Epidemiologische Verfahren
standardization of rates | case-control | cohort | matched case-control | Mantel-Haenszel | pharmacokinetics | ROC analysis | ICD-10

Datanmanagement
data transformations | match-merge | import/export data | ODBC | SQL | XML | by-group processing | append files | sort | row-column transposition | labeling | saving results