. Author manuscript; available in PMC: 2015 Aug 1.

Published in final edited form as: Lancet Respir Med. 2014 May 19;2(8):611–620. doi: 10.1016/S2213-2600(14)70097-9

Table 5.

Differences in response to PEEP strategy by probable latent class assignment, in ALVEOLI Cohort

	Phenotype 1 (n=404)		Phenotype 2 (n=145)

	Low PEEP (n=202)	High PEEP (n=202)	Low PEEP (n=71)	High PEEP (n=74)	p-value*
Dead at 90 days, n (%)	33 (16%)	48 (24%)	36 (51%)	31 (42%)	0.049
Ventilator Free Days, median (IQR)	20 (10, 25)	21 (3, 24)	2 (0, 21)	4.5 (0, 20)	0.018
Organ Failure Free Days, median (IQR)	22 (11, 26)	22 (9, 26)	4 (0, 18)	6.5 (0, 21)	0.003

p-value for interaction between PEEP assignment and latent class