Inclusion criteria | Exclusion criteria |
---|---|
1. Study design: interventional or observational | 1. Studies of exclusively pediatric population (age <18 years) |
2. Included population: hospitalized aSAH patients | 2. Non-human studies |
3. Included intervention: RBC transfusion | 3. Duplicates or ‘sub-cohorts’ of previously published cohorts |
4. Comparator: a different transfusion threshold or no transfusion | |
5. Study outcome: any |