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In a model combining PFA\u2010adenosine diphosphate (ADP), PFA\u2010epinephrine (EPI), and ISTH\u2010BAT overall performance to diagnose IPFDs was low with area under the curves of 0.56 (95% CI 0.44, 0.69) compared with 0.84 (95% CI 0.76, 0.92) for VWD. Correlation of PFA\u2010EPI\/\u2010ADP and ISTH\u2010BAT was low with 0.25\/0.39 Spearman's correlation coefficients. PFA were significantly prolonged in patients with VWD and Glanzmann thrombasthenia. ISTH\u2010BAT\u2010scores were only positive in severe bleeding disorders, but not in children with mild IPFDs or VWD.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Neither ISTH\u2010BAT nor PFA or the combination of both help diagnosing mild IPFDs in children. 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