The Japanese Society of Extra-Corporeal Technology in Medicine has been conducting open tests based on a database of extracorporeal circulation cases since May 2013. The society collected data from the tests conducted by the end of December 2013 twice, and organized and analyzed the second collected data.The number of data samples collected was 507. Roller-type and centrifugal pumps accounted for 19.5 and 80.5% of the total number of pumps used, respectively. Regarding venous drainage methods, gravity, vacuum-assisted, pump-assisted, and a combination of gravity and vacuum-assisted venous drainage accounted for 61.9, 11.4, 5.1, and 21.5%, respectively. The rate of using the pre-bypass filter was 32.5%. The error rates in data validation for multiple-choice and descriptive items were 0.8 and 18.9%, respectively. This suggests that the rate of cases excluded was 15.0%. However, when items were limited to those similar to the PERForm items adopted by the International Consortium for Evidence-Based Perfusion (ICEBP), the rate of excluded cases was 4.5%.In the case of data from different institutions, items involving input errors and defects varied among institutions. In the case of data from the same institutions, input errors and defects were identified in the same items. However, we had asked the institutions to review input data, and there was a significant decrease in the number of systematic errors. This suggests that data input can be more accurate through the validation and assessment of data.As data related to the same items are input according to the definitions in each institution and data from multiple institutions are analyzed, the results can be applied to assessment standards using actual data.
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