Table 1 Characteristics of included studies
Study | Operation | Cases (T/C) | Mean age (T/C) | Gender (F) | Dosage | Transfusion trigger |
|---|---|---|---|---|---|---|
Krohn 2002 | Lumbar surgery | 16/14 | 51/54 | 9/9 | 0.5 g | 8 g/dL |
Liang 2016 | PLIF | 30/30 | 51.13/53.83 | 15/12 | 2 g | 7 g/dL |
Ren 2017 | PLIF | 50/50 | 55.2/58.7 | 20/19 | 1 g | 7 g/dL |
Xu 2017 | PLIF | 40/40 | 53.1/57.4 | 21/27 | 1 g | 8 g/dL |