Length of stay in the ICU
Study	High PEEP	Low PEEP	P Value
Huh 2009	Means: 25.1 days.	Means: 21.4 days	0,643
Huh 2009	SD: 5.6	SD: 5.3
Huh 2009	No. of patients: 30	No. of patients: 27
Meade 2008	Median: 13 days.	Median: 13 days.	0,98
Meade 2008	Interquartile range: 8‐23	Interquartile range: 9‐23
Meade 2008	No. of patients: 475	No. of patients: 508
Talmor 2008	Median: 15,5 days.	Median: 13 days.	0,16
Talmor 2008	Interquartile range: 10,8‐28,5	Interquartile range: 7‐22
Talmor 2008	No. of patients: 30	No. of patients: 508