Risk of bleeding after medical interventions
. | Carriers, event/total (%) . | Noncarriers, event/total (%) . | RR (CI) . |
|---|---|---|---|
| Tooth extraction | |||
| Prolonged bleeding; more than 3 h | 61/228 (27) | 26/219 (12) | 2.3 (1.5-3.4) |
| Treatment after intervention | 24/228 (11) | 1/219 (0.5) | 23.1 (3.1-169) |
| Tonsillectomy or adenotomy | |||
| Prolonged bleeding; more than 3 h | 29/123 (24) | 16/122 (13) | 1.8 (1.0-3.1) |
| Treatment after intervention | 10/123 (8) | 1/122 (0.8) | 9.9 (1.3-76.3) |
| Operations | |||
| Prolonged bleeding; more than 3 h | 46/163 (28) | 16/146 (11) | 2.6 (1.5-4.3) |
| Treatment; ever | 16/174 (9) | 6/149 (4) | 2.3 (0.9-5.7) |
| Blood transfusion | 29/174 (17) | 18/149 (12) | 1.4 (0.8-2.4) |
. | Carriers, event/total (%) . | Noncarriers, event/total (%) . | RR (CI) . |
|---|---|---|---|
| Tooth extraction | |||
| Prolonged bleeding; more than 3 h | 61/228 (27) | 26/219 (12) | 2.3 (1.5-3.4) |
| Treatment after intervention | 24/228 (11) | 1/219 (0.5) | 23.1 (3.1-169) |
| Tonsillectomy or adenotomy | |||
| Prolonged bleeding; more than 3 h | 29/123 (24) | 16/122 (13) | 1.8 (1.0-3.1) |
| Treatment after intervention | 10/123 (8) | 1/122 (0.8) | 9.9 (1.3-76.3) |
| Operations | |||
| Prolonged bleeding; more than 3 h | 46/163 (28) | 16/146 (11) | 2.6 (1.5-4.3) |
| Treatment; ever | 16/174 (9) | 6/149 (4) | 2.3 (0.9-5.7) |
| Blood transfusion | 29/174 (17) | 18/149 (12) | 1.4 (0.8-2.4) |
Participants who had been treated prior to the clinical intervention with clotting factor preparations, tranexamic acid, or desmopressin were excluded from the analysis.