In addition to the guidance offered by the table, it is mandatory to refer to the text for more detailed instructions.
§ Distinction between 0 and 1 is of critical importance. Score 1 means that the symptom is judged as present in the patient’s history by the interviewer but does not qualify for a score 2 or more
* Consultation only: the patient sought medical evaluation and was either referred to a specialist or offered detailed laboratory investigation
** Example: 1 extraction/surgery resulting in bleeding (100%): the score to be assigned is 2; 2 extractions/surgeries, 1 resulting in bleeding (50%): the score to be assigned is 2; 3 extractions/surgeries, 1 resulting in bleeding (33%): the score to be assigned is 2; 4 extractions/surgeries, 1 resulting in bleeding (25%): the score to be assigned is 1
# If already available at the time of collection
^ Include: umbilical stump bleeding, cephalohematoma, cheek hematoma caused by sucking during breast/bottle feeding, conjunctival hemorrhage or excessive bleeding following circumcision or venipuncture. Their presence in infancy requires detailed investigation independently from the overall score
Normal range is <4 in adult males, <6 in adult females and <3 in children (3).
ISTH/SSC bleeding assessment tool: a standardized questionnaire and a proposal for a new bleeding score for inherited bleeding disorders.
Rodeghiero F, Tosetto A, Abshire T, Arnold DM, Coller B, James P, Neunert C, Lillicrap D; ISTH/SSC joint VWF and Perinatal/Pediatric Hemostasis Subcommittees Working Group.
J Thromb Haemost. 2010 Sep;8(9):2063-5
Normal range of bleeding scores for the ISTH-BAT: adult and pediatric data from the merging project.
Elbatarny M, Mollah S, Grabell J, Bae S, Deforest M, Tuttle A, Hopman W, Clark DS, Mauer AC, Bowman M, Riddel J, Christopherson PA, Montgomery RR; Zimmerman Program Investigators, Rand ML, Coller B, James PD.
Haemophilia. 2014 Nov;20(6):831-5. doi: 10.1111/hae.12503. Epub 2014 Sep 6.