Stata 10 is a complete, integrated statistical package designed for data analysis, data management and graphics. Features include multilevel mixed models, exact logistic regression, multiple correspondence analysis, a graph editor, and time-and-date variables. The software provides hundreds of statistical tools, from advanced techniques to standard methods. Data management commands give complete control of all types of data, with advanced tools for managing specialized data such as survival/duration, time-series, panel/longitudinal, categorical and survey data. The integrated graph editor allows easy modifications and generation of publication-quality graphs. The Mata matrix programming language supplies both an interactive environment for manipulating matrices and a full development environment that can produce compiled and optimized code.