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New in Stata 14

Bayesian analysis

  • Thousands of built-in models
  • Add your own models
  • Adaptive Metropolis–Hastings
  • Gibbs sampling
  • Convergence diagnostics
  • Posterior summaries
  • Hypothesis testing
  • Model comparison

IRT (item response theory)

  • Binary response models—1PL, 2PL, 3PL
  • Ordinal response models—graded response, partial credit, rating scale
  • Nominal response model
  • Hybrid models
  • Item characteristic curves
  • Test characteristic curves
  • Item information function

Treatment effects

  • Survival outcomes
  • Endogenous treatments
  • Balance diagnostics and tests
  • Sampling weights

Unicode

  • Data
  • Variable and value labels
  • Variable names!

Multilevel survival models

  • Random effects
  • Crossed effects
  • Two, three, higher level
  • Right censoring
  • Exponential, Weibull, ...
  • Survey data

Multilevel models

  • Survey data
  • Multilevel sampling weights
  • Survival models
  • Denominator degrees of freedom
  • Marginal predictions, means, effects

SEM (structural equation modeling)

  • Satorra–Bentler adjustments
  • Survival models
  • Survey data
  • Multilevel weights
  • Marginal predictions, means, effects

Markov-switching models

  • Autoregressive model
  • Dynamic regression model
  • State-dependent parameters
  • Transition probabilities
  • State membership probabilities

Survey statistics

  • Multilevel models
  • Survival models
  • SEM (structural equation modeling)
  • Multistage/multilevel weights

Fractional outcome regression

  • Fractions, proportions, …
  • Beta regression
  • Probit and logit
  • Heteroskedasticity
  • Odds ratios

Power and sample size

  • Contingency tables
  • Cochran–Mantel–Haenszel test
  • Test for trend
  • Matched case–control studies
  • Survival analysis

Marginal means and marginal effects

  • Multiple outcomes
  • Multiple equations
  • Integrate over random effects
  • Integrate over latent variables

More documentation

  • Two all new manuals
  • 12,000+ total pages
  • Quick starts
  • Thousands of worked examples
  • Overview of statistical methods

Panel-data survival models

  • Random effects (intercepts)
  • Random coefficients
  • Right-censoring
  • Exponential, Weibull, …
  • Survival graphs

More statistics

  • Hurdle models
  • Censored Poisson models
  • Beta regression
  • Structural break tests
  • z tests comparing means
  • More distribution functions
  • Mersenne Twister

And more

  • More than 2 billion observations
  • Integration with Excel
  • Postestimation made easy
  • ICD-10
  • Interface in Spanish and Japanese