Overview of the data collected in the participating hospitals
| Patient | |
| Patient number | Encrypted patient identification number as used by the hospital |
| Date of birth | Patient's date of birth |
| Gender | Patient gender |
| Hospitalisation | |
| Hospital | Hospital name or code |
| Hospitalisation dates | Date and time of start and end of hospitalisation during which a transfusion was given |
| Diagnosis | |
| Diagnoses | All diagnoses* |
| Hospital discharge status | Patient status when discharged from hospital (home/dead/institution) |
| Procedure | |
| Procedures | All procedures and procedure dates* |
| Transfusion | |
| Transfusion administration | Date and time of transfusion |
| DIN | Donation identification number of the transfused unit |
| Product code | Product code of the transfused unit (ISBT 128 Standard Specification) |
| Blood values | |
| Hb | Patient haemoglobin level† |
| Platelet count | Patient platelet count† |
| Hct | Patient haematocrit level† |
| PT | Patient prothrombin time† |
| PTT | Patient partial thromboplastin time† |
| Blood group | Patient ABO blood group |
| RhD | Patient RhD |
| Irregular antibodies | Patient irregular antibodies† |
| Troponin | Patient troponin level† |
| Transfusion reactions | |
| Transfusion reaction type | Type of transfusion reaction |
| Date | Date of transfusion reaction |
| Severity | Severity of transfusion reaction |
| Imputability | Likelihood that the transfusion reaction is caused by the transfusion |
*Diagnoses and procedures can be linked to hospitalisation post hoc, or to outpatient transfusions within a time interval around the transfusion. In the Netherlands, instead of diagnosis date, a start date and end date of the ‘diagnosis treatment combination’ trajectory are registered.
†All laboratory parameters measured during hospitalisation, or in case of outpatient transfusion all laboratory parameters within 72 hours before and after transfusion. All laboratory measurements include time stamps.