Missing data

• 2018/07/07 How much missingness can you tolerate?
• 2016/04/17 Some simple examples of single imputation
• 2015/05/18 Can I replace missing values with zero?
• 2014/07/07 Simple longitudinal data sets to illustrate data management
• 2014/05/06 A review of methods for missing data
• 2010/05/28 Lessons learned the hard way. Don’t presume to know how your software handles missing value codes
• 2009/07/24 Formula for multiple imputation
• 2008/07/15 Undeclared missing code leads