1.22. Analysis.

Comparison 1: High versus low levels of PEEP, Outcome 22: Length of stay in ICU

Length of stay in ICU
Study	High PEEP	Low PEEP	P Value
Cavalcanti 2017	Means: 18.2	Means: 19.2	0,51
	SD: 22.4	SD: 25.9
	No. of patients: 501	No. of patients: 509
Hodgson 2011	Median: 9.9	Median: 16	0,19
	Interquartile range: 5.6‐14.8	Interquartile range: 8.1‐19.3
	No. of patients: 10	No. of patients: 10
Hodgson 2019	Median: 11.1	Median: 13.8	0,69
	Interquartile range: 6.2‐20.1	Interquartile range: 6.8‐22.5
	No. of patients: 57	No. of patients: 56
Kacmarek 2016	Median: 18	Median: 16	0,79
	Interquartile range: 10‐28	Interquartile range: 11‐28
	No. of patients: 99	No. of patients: 101
Meade 2008	Median: 13 days.	Median: 13 days.	0,98
	Interquartile range: 8‐23	Interquartile range: 9‐23
	No. of patients: 475	No. of patients: 508
Talmor 2008	Median: 15,5 days.	Median: 13 days.	0,16
	Interquartile range: 10,8‐28,5	Interquartile range: 7‐22
	No. of patients: 30	No. of patients: 31