ITEM 24. Report estimates of test reproducibility, if done.
Example The interobserver variability in the grading of stenotic renal artery lesions (grades 1 to 4) with conventional angiography and MRA were identical, with a k value of 0.77 and 95% confidence intervals ranging from 0.67 to 0.86. For the detection of hemodynamically significant lesions, interobserver variability was 0.87 (0.78 to 0.95) for MRA and 0.88 (0.79 to 0.97) for conventional angiography.[1]
We recommend that authors report all measures of test reproducibility that they performed during the study (see Item 13). For quantitative analytical methods, report the coefficient of variation (CV) at concentrations that are relevant to the study, state those concentrations and the number of determinations (for within-run CV, if relevant) or the number of days of testing (for day-to-day, total CV), or both.
References
1.
Leung DA, Hoffmann U, Pfammatter T, et al.Magnetic resonance angiography versus duplex sonography for diagnosing renovascular disease. Hypertension 1999; 33:726-31.