Table 4. Gas exchange and acid-base characteristics.

Group	VD/VT	PaO2/FiO2 (mmHg)	OI	pH	BD (mEq/dL)
INH	0.66 [0.55, 0.75]	116 [79, 146]	14.4 [11.4, 29.8]	7.31 [7.26, 7.35]	−6.0 [−7.7, −2.6]
DOD	0.64 [0.56, 0.75]	120 [63, 170]	11.4 [9.3, 21.3]	7.32 [7.25, 7.41]	−6.5 [−11.3, 0.8]
HEP	0.78 [0.57, 0.79]	103 [82, 142]	13 [10, 21.4]	7.27 [7.18, 7.38]	−8.7 [−11.3, −2.6]
PAN	0.54 [0.47, 0.65]	109 [82, 138]	15.4 [10.1, 22.7]	7.34 [7.27, 7.43]	−2.7 [−7.4, 0.7]
NEU	0.68 [0.47, 0.73]	109 [98, 147]	15.6 [8.4, 20.4]	7.34 [7.19, 7.43]	−2.6 [−8.0, 0.5]
PERF	0.63 [0.49, 0.66]	103 [70, 146]	20.5 [9.4, 36]	7.39 [7.32, 7.46]	−5.6 [−7.3, 2.2]
TRALI	0.65 [0.43, 0.65]	163 [68, 181]	12.2 [8.8, 33.9]	7.41 [7.40, 7.41]	−1.1 [−1.3, 5.2]
TOX	0.66 [0.63, 0.70]	104 [58, 104]	18.2 [16.3, 31.0]	7.35 [7.23, 7.45]	−1.3 [−11.3, 8.7]
H-IM	0.64 [0.55, 0.79]	154 [111, 194]	12.9 [8.7, 13.8]	7.28 [7.17, 7.28]	−6.3 [−7.4, −2.3]
IDIO	0.61 [0.48, 0.69]	118 [76, 175]	16.1 [6.9, 26.1]	7.36 [7.32, 7.41]	−5.1 [−8.9, 3.3]
P (K-W)	0.15	0.82	0.95	0.24	0.58

Data reported as median [25–75% interquartile range]. K-W, Kruskal-Wallis test; INH, inhalation injury; DOD, drug overdose; HEP, hepatic failure; PAN, pancreatitis; NEU, non-traumatic acute brain injury; PERF, perfusion-related; TRALI, transfusion related acute lung injury; TOX, toxicity; H-IM, hyper-immune response; IDIO, idiopathic.