The proportion of patients with mRS ≤ 2
A total of nine studies (4385 patients) reported10-12,16,18-21,23 the proportion of patients with mRS ≤ 2. Pooled results showed that there was no significant difference in the proportion of patients with mRS ≤ 2 between the prophylactic antibiotics group and the control group [RR 1.19 (95%CI: 0.97-1.45,I2 = 75%; Supplementary Materials Figure S1)].