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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: Rev Recent Clin Trials. 2009 May;4(2):79–88. doi: 10.2174/157488709788186021

Table 2.

Recommended Additions and Changes to Evaluation of Trial Quality

Randomization Quality of randomization
Masking Proper evaluation of success
Allocation Concealment Proper evaluation of success
Withdrawals and Dropouts Run-in selection bias Proper ITT and sensitivity analyses
Baseline data Measured before randomization
Endpoints Maximally informative, clinical (not surrogate) endpoints, pre-specified
Stopping rules Account for any interim analysis
Statistical methods Minimal assumptions, adhere to the scale of measurement, pre-specified
Measures of Variability Necessary data table presented
Address Multiplicity Adjust p-values for multiple testing