Issues in use of SAS PROC.MIXED to test the significance of treatment effects in controlled clinical trials

Mathematics

• Treatment Effects 98%
• Drop out 90%
• Clinical Trials 87%
• Covariates 77%
• Repeated Measurements 57%
• Mixed Model 51%
• Modeling 44%
• Formulation 43%
• Nonlinear Response 32%
• Random Coefficient Models 32%
• Analysis of Covariance 30%
• Model 29%
• Error Model 29%
• Linear Mixed Model 28%
• Categorical variable 28%
• Alternatives 28%
• Unordered 27%
• Covariance Structure 25%
• Type I error 25%
• Baseline 24%
• Linear Regression Model 22%
• Slope 21%
• Regression 17%

Medicine & Life Sciences

• Controlled Clinical Trials 100%
• Linear Models 71%
• Clinical Trials 14%