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Correlations between FVIII measurements and adjusted annual bleeding rate for treated bleeding (a‐ABR). Spearman correlations between annual bleeding rate for treated bleedings (adjusted ABR; a‐ABR) and baseline FVIII measured by one‐stage assay (FVIII OSA), and by the chromogenic assay (FVIII CSA) or the lowest measurement as tested by both assays (FVIII lowest)
