| Author | Patients (n) | Location | Outcome | Results |
|---|---|---|---|---|
| Böck[24] |
174 (141 with transfusion) | Larynx/hypopharynx | Recurrence, survival, infection | No influence |
| Jones[25] |
90 (46 with transfusion) | Head and neck | Recurrence | No influence |
| Ell[26] |
240 (113 with transfusion) | Larynx | Survival | No influence |
| Woolley[27] |
143 (99 with tranfusion) | Head and neck | Recurrence | P < 0.009 |
| Von Doersten[28] |
104 (51 with transfusion) | Head and neck | Recurrence, infection | No influence |
| Schuller[17] |
217 (132 with transfusion) | Head and neck | Survival | No influence |
| Barra[29] |
207 (152 with transfusion) | Head and neck | Survival | P < 0.05 |
| Alun-Jones[30] |
69 (38 with transfusion) | Larynx | Survival | P < 0.05 |
| Sturgis[14] |
61 (25 with transfusion) | Head and neck | Recurrence |
Influence (48% with transfusion; 24% without transfusion) |
| Leon[31] |
269 (86 with transfusion) | Larynx | Recurrence | No influence |
| Moir[32] | 165 (60 with transfusion) | Head and neck | Recurrence | P < 0.04 |
| Taniguchi[15] |
105 (64 with transfusion) | Oral cavity | Survival | P < 0.01 |
| Szakmany[33] |
559 (437 with transfusion) |
Oral cavity/ Oropharyngeal |
Recurrence, survival | ≥3 units influence |
| Fenner[16] | 223 | Oral cavity | Survival | No influence |