Table 1 Secondary, supportive and intermediate outcomes
Surgical audit | |
|---|---|
Secondary outcomes | • Total volume of allogeneic red cells transfused (units at trust-level; units at patient-level); • Total number of incidents reported to SHOT (count at trust-level); • Number of definitely, probably or possibly preventable incidents reported to SHOT within clinical specialties targeted by the audit (count at trust-level) |
Supportive outcomes | • Pre-operative transfusion (unnecessary/necessary) • Post-operative transfusion (unnecessary/necessary) • Individual NCA audit standard met • Total volume of red cells issued (units at trust-level) • Total volume of red cells wasted (units at trust-level) |
Intermediate outcomes (mediators) | Include: • Whether the planned surgery date equals the actual surgery date • Volume of post-operative cell salvage transfused • Hb level • Length of post-operative hospital stay |
Trust process level data | • Intervention fidelity • Organizational structures and resources • Tier of data collectors |
Haematology audit | |
Secondary outcomes | • Total volume of allogeneic red cells transfused (units at trust-level; units at patient-level); • Total volume of platelets transfused (units at patient-level); • Total number of incidents reported to SHOT (count at trust-level); • Number of definitely, probably or possibly preventable incidents reported to SHOT within clinical specialties targeted by the audit (count at trust-level) |
Supportive outcomes | • Red cell transfusion alone (unnecessary/necessary) • Platelet transfusion alone (unnecessary/necessary) • Individual NCA audit standard met • Total volume of red cells issued (units at trust-level) • Total volume of red cells wasted (units at trust-level) • Total volume of platelets issued (units at trust-level) • Total volume of platelets wasted (units at trust-level) |
Intermediate outcomes (mediators) | Include: • Whether the Hb level was checked after each unit was transfused • Whether the platelet count was measured after each unit was transfused |
Trust process level data | • Intervention fidelity • Organizational structures and resources • Tier of data collectors |