What's New in July, 2012

R

• R Data Analysis Examples: (Approximate) Exact Logistic Regression
• FAQ: How can I visualize longitudinal data in ggplot2?
• FAQ: How can I make individual growth curves in ggplot2?
• FAQ: How can I explore different smooths in ggplot2?

Stata

• FAQ: How can I get margins for a multiply imputed survey logit model? (Stata 12)
• FAQ: Sample setups for commonly used survey data sets 

What's New in June, 2012

R

• Random coefficient poisson models
• Multivariate random coefficient model
• How can I perform mediation with multilevel data? (Method 2)
• R Advanced: Simulating the Hospital Doctor Patient Dataset

Stata

• Stata Code Fragment: Compute Dispersion using Mata (Stata 12)

SAS

• Zero Truncated Poisson Regression
• Zero Truncated Negative Binomial Regression