1. Current Issues with Covariate Adjustment in the Analysis of Data from Randomized Controlled Trials
2. Change Scores as Dependent Variables in Regression Analysis
3. Missing Data
4. Allison, P. D. (2012, April 22–25). Handling missing data by maximum likelihood [Paper presentation]. Orlando, FL: SAS Global Forum. Retrieved from http://www.statisticalhorizons.com/wp-content/uploads/MissingDataByML.pdf.
5. Arens, S. A., Stoker, G., Barker, J., Shebby, S., Wang, X., Cicchinelli, L. F. & Williams, J. M. (2012). Effects of curriculum and teacher professional development on the language proficiency of elementary English language learner students in the central region. (NCEE 2012-4013). Mid-Continent Research for Education and Learning. Retrieved from https://files.eric.ed.gov/fulltext/ED530839.pdf.