Table 2.

Length of stay in the ICU.

Study	Distribution of the data	Low-PEEP group (days)	Titrated PEEP group (days)	p value
Hodgson et al.10	Skewed distribution	16.0 (8.1–19.3)	9.9 (5.6–14.8)	0.19
Cavalcanti et al.6	Gaussian distribution	19.2 ± 25.9	18.2 ± 22.4	0.51
Jin et al.11	Gaussian distribution	21.4 ± 5.3	25.1 ± 5.6	0.643
Kacmarek et al.12	Skewed distribution	16 (11–28)	18 (10–28)	0.79
Pintado et al.13	Skewed distribution	20 (12–29)	21 (15–46)	0.24