The reliability of the COMM was assessed by internal consistency and test-retest reliability.
Reliability was assessed by internal consistency of the questionnaire reporting Cronbach's alpha coefficient of 0.757.
Analytical performance was assessed by internal and external quality controls (ERNDIM; http://www.erndimqa.nl/).nl/
The predictive performance of the final Cox regression model was assessed by internal validation using bootstrap resampling.
Performance was assessed by internal cross-validation, multiple independent data sets, and comparison to existing algorithms using receiver-operating characteristic and Kaplan-Meier survival analysis.
Macrovascular disease was assessed by internal and common carotid IMT assessed by ultrasonography between 1994 and 1996, at approximately year 6 of EDIC and 3 years before the collection of the samples used for this report (21).
Reliability was assessed by internal consistency of the questionnaire reporting Cronbach's alpha coefficient and validity was examined by convergent validity performing correlation between the GHQ-12 and global quality of life scores and both showed satisfactory results.
Reliability was assessed by internal consistency (Cronbach's alpha) of each dimension by calculating the correlation between all items within a dimension to test to what extent they measured the same underlying concept.
Reliability was assessed by internal consistency which is determined by the degree to which all items measure the same thing, measured using Cronbach's alpha, which ranges from 0 to 1. Values greater than 0.7 shows good reliability (ranges from 0.7 and 0.9); although 0.6 may be acceptable.
The model performance was assessed by internal-validation based on a bootstrap procedure with optimism/bias correction [ 13].
