Stata 13 was just announced!!

A lot of new features in Stata 13.

Treatment effects

• Inverse-probability weights (IPW)
• Regression adjustment
• Propensity-score matching
• Covariate matching
• Doubly robust methods
• Continuous, binary,and count outcomes
• Endogenous treatment models
  

Multilevel models

• Negative binomial
• Ordered logistic
• Ordered probit
• Multinomial logistic
• GLM
• Hierarchical and crossed models
• More
  

Power and sample size

• Means, proportions, variances, correlations
• Case–control and cohort studies
• Interactive control panel
• Tabular results
• Automatic graphs
• More
  

GeneralizedSEM

• Generalized linear responses: binary, count, ordered outcomes
• Multilevel models: nested (hierarchical) and crossed
• Random slopes and intercepts
• Fast
• More