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Table 1 Summary of included study characteristics

From: Tracheostomy timing and outcome in critically ill patients with stroke: a meta-analysis and meta-regression

Author

Year

Study type

Setting

Overall bias (NOS)

Total number of patients

Mean tracheostomy time (days, SD)

Alsherbini et al

2019

Retrospective Cohort Study

Single-centre

8

140

–

Bosel et al

2013

Randomised controlled trial

Single-centre

–*

60

6.62 (0.35)

Bosel et al

2022

Randomised controlled trial

Multi-centre

–*

380

7.2 (0.43)

Catalino et al

2018

Retrospective cohort study

Single-Centre

9

48

–

Chen et al

2019

Retrospective cohort study

Single-centre

9

425

4.25 (2.59)

Hallan et al

2022

Retrospective Cohort Study

Multi-centre

8

2420

12.58

Lee et al

2015

Retrospective cohort study

Single-centre

8

95

–

Maier et al

2021

Retrospective cohort study

Single-centre

8

40

16

Pelosi et al

2011

Retrospective cohort study

Multi-centre

8

362

9.19 (3.68)

Rabinstein et al

2004

Retrospective cohort study

Single-centre

8

97

14.77 (53.1)

Schneider et al

2017

Prospective cohort study

Single-centre

8

53

11.33 (5.27)

Shen et al

2022

Retrospective cohort study

Single-centre

8

61

6.98 (6.12)

Villwock et al

2014

Retrospective cohort study

Multi-centre

8

13,165

12.00 (4.17)

  1. NOS Newcastle–Ottawa Scale, SD standard deviation
  2. *As the marked studies are RCTs the NOS system cannot be used to assess study bias