Table 1.

Comparisons of baseline characteristics between ARDS and non-ARDS patients

Variable	ARDS (N = 179)	Non-ARDS (N = 350)	P value
Sex (male/female)	134 (75%)/45 (25%)	230 (66%)/120 (34%)	0.019
Age (years)	66 (53, 76)	70 (60, 78)	0.003
History of drinking	10 (6%)	27 (8%)	0.236
History of smoking	32 (18%)	50 (14%)	0.170
Comorbidities
COPD	7 (4%)	17 (5%)	0.296
HTN	67 (37%)	120 (34%)	0.267
CHD	32 (18%)	79 (23%)	0.126
DM	37 (21%)	70 (20%)	0.470
Cancer	32 (18%)	90 (26%)	0.026
CKD	12 (7%)	25 (5%)	0.504
Hematological disorder	1 (1%)	2 (1%)	0.734
Infection site
Pulmonary/Non-pulmonary	53 (30%)/126 (70%)	64 (18%)/286 (82%)	0.002
Pancreatitis with local infection	16 (9%)	9 (3%)	0.002
Acute abdominal infection	82 (46%)	222 (63%)	< 0.001
Hepatobiliary system	18 (10%)	21 (6%)	0.067
Urinary tract	7 (4%)	19 (5%)	0.296
Skin and soft tissue	1 (1%)	12 (3%)	0.034
Central nervous system	0 (0%)	2 (1%)	0.437
Pleural	2 (1%)	0 (0%)	0.114
CRBSI	0 (0%)	1 (0%)	0.663
Emergency admission	87 (49%)	213 (61%)	0.004
Septic shock	118 (66%)	125 (36%)	< 0.001
APACHE II	16 (13, 20)	14 (10, 18)	< 0.001
SOFA	9 (7, 11)	7 (4, 8)	< 0.001
Non-pulmonary SOFA	6 (4, 8)	5 (3, 6)	< 0.001

Values are presented as median (interquartile range) or number (%); Significant P values are in bold form

ARDS, acute respiratory distress syndrome; COPD, chronic obstructive pulmonary disease; HTN, hypertension; CHD, coronary heart disease; DM, Diabetes mellitus; CKD, chronic kidney disease; CRBSI, catheter related bloodstream infection; APACHE II, acute physiology and chronic health evaluation II; SOFA, sequential organ failure assessment