Table 1. Clinical trials included in this systematic review and meta-analysis.

Authors	sample	intervention	placebo	Jadad scores
Matsutani et al., 199810*	33	14	19	3
Sato et al., 200211*	66	33	33	5
Takeda et al., 19972†	30	15	15	3
Takeda et al., 20033*	17	7	10	3

^*Methylprednisolone: 10 mg/kg before induction of anesthesia;

^† Methylprednisolone: 30 mg/kg before induction of anesthesia.