Categorization of bleeding symptoms
The bleeding symptoms were evaluated according to the International
Working Group (IWG) bleeding scale. In this scale, bleeding
manifestations are grouped into three major domains: skin (S), visible
mucosae (M), and organs (O), with a gradation of severity (SMOG). The
patients were graded based on physical examination at the time of the
visit or on the patient’s history and medical reports. The severity of
bleeding, as defined in this scale, was graded from 0 to 4 (8).