Table 3.

Pairwise comparisons of main outcomes across positive end-expiratory pressure levels

PEEP level pairs		Cardiac output (l/min)		PaO2 (mmHg)		Oxygen delivery (ml/min)
		MeanDiff (SEM)	P	MeanDiff (SEM)	P	MeanDiff (SEM)	P
0	5	0.05 (0.06)	.45	−47.29 (14.48)	.002	−3.05 (6.69)	.649
0	10	0.17 (0.06)	.006	−51 (13.99)	<.001	6.82 (6.46)	.294
0	15	0.18 (0.06)	.003	−67.27 (13.91)	<.001	13.12 (6.43)	.044
0	20	0.31 (0.06)	<.001	−112.19 (13.98)	<.001	25.77 (6.46)	<.001
5	10	0.12 (0.06)	.046	−3.7 (14.14)	.794	9.88 (6.54)	.135
5	15	0.14 (0.06)	.026	−19.98 (13.92)	.155	16.18 (6.44)	.014
5	20	0.26 (0.06)	<.001	−64.9 (13.61)	<.001	28.82 (6.31)	<.001
10	15	0.01 (0.06)	.843	−16.28 (14.21)	.255	6.3 (6.54)	.338
10	20	0.14 (0.06)	.027	−61.2 (14.58)	<.001	18.95 (6.71)	.006
15	20	0.13 (0.06)	.048	−44.92 (14.97)	.003	12.65 (6.86)	.068

MeanDiff mean difference, PEEP positive end-expiratory pressure, SEM standard error of mean