Table 3 Pooled RRs and 95% CI for the association between neuroendoscopy and craniotomy in SICH patients, according to selected subgroups

Intracranial or wound infection

3

169 (79 cases and 90 controls)

0.45 (95%CI 0.11–1.84)

0%

0.27

Epilepsy

3

281 (142 cases and 139 controls)

0.47 (95%CI 0.26–1.21)

0%

0.01

Pneumonia

7

491 (241 cases and 250 controls)

0.37 (95%CI 0.25–0.56)

0%

< 0.00001

Digestive disease

2

218 (110 cases and 108 controls)

0.79 (95% CI 0.22–2.81)

0

0.72

Hypoproteinemia

1

184 (93 cases and 91 controls)

0.40 (95%CI 0.19–0.82)

Not applicable

0.01

Tracheotomy

2

218 (110 cases and 108 controls)

0.43 (95%CI 0.24–0.76)

0%

0.003

Shunt surgery

2

79 (38 cases and 41 controls)

0.66 (95%CI 0.27–1.62)

0%

0.37

Duration of ICU stay

2

123 (62 cases and 61 controls)

− 0.58 (95%CI − 0.94 to − 0.21)

0%

0.002

Duration of hospital stay

3

205 (110 cases and 95 controls)

− 0.34 (95%CI − 0.61 to − 0.06)

40%

0.02

Hospital costs

2

123 (62 cases and 51 controls)

− 0.75 (95%CI − 1.12 to − 0.38)

0%

< 0.0001

Residual hematoma volume

4

211 (107 cases and 104 controls)

− 0.38 (95%CI − 0.85 to 0.09)

65%

0.11

Blood loss volume

5

553 (285 cases and 268 controls)

− 2.56 (95%CI − 3.44 to − 1.68)

93%

< 0.00001

Postoperative BI score

2

190 (95 cases and 95 controls)

1.48 (95%CI 1.16–1.80)

0%

< 0.00001

Postoperative mRS score

2

193 (99 cases and 94 controls)

− 0.44 (95%CI − 0.73 to − 0.15)

0%

0.003

Postoperative GOS score

2

114 (53 cases and 61 controls)

0.46 (95%CI 0.08–0.83)

0%

0.02