Table 5.
Comparisons between patients with mild, moderate, and severe ARDS
| Variable | Mild (N = 39) | Moderate (N = 109) | Severe (N = 31) | P value |
|---|---|---|---|---|
| Sex (male/female) | 31 (79%)/8 (21%) | 80 (73%)/29 (27%) | 23 (74%)/8 (26%) | 0.781 |
| Age (years) | 66 (52, 77.5) | 66 (54, 77) | 62 (53.5, 72) | 0.538 |
| History of drinking | 6 (15%) | 22 (20.2%) | 4 (12.9%) | 0.595 |
| History of smoking | 2 (5%) | 8 (7%) | 0 (0%) | 0.274 |
| Infection site | ||||
| Pulmonary/Non-pulmonary | 6 (15%)/33 (85%) | 26 (24%)/83 (76%) | 17 (55%) /14 (45%) | < 0.001 |
| Pancreatitis with local infection | 5 (13%) | 11 (10%) | 2 (7%) | 0.684 |
| Acute abdominal infection | 24 (62%) | 55 (51%) | 8 (26%) | 0.010 |
| Emergency admission | 26 (67%) | 52 (48%) | 9 (29%) | 0.007 |
| Septic shock | 24 (62%) | 72 (66%) | 22 (77%) | 0.720 |
| APACHE II | 16 (12, 19.5) | 16 (12, 20) | 16 (14, 21.5) | 0.283 |
| SOFA | 8 (6, 10) | 9 (8, 11) | 10 (8, 12) | 0.014 |
| Non-pulmonary SOFA | 5 (4, 7) | 6 (5, 7.25) | 6 (4.5, 8) | 0.251 |
| Length of mechanical ventilation (hours) | 144 (49, 235) | 112 (44, 224) | 106 (48, 236) | 0.861 |
| Length of ICU stay (days) | 8 (3, 13) | 7 (4, 15) | 6 (3, 16.5) | 0.772 |
| Length of hospital stay (days) | 19 (12, 28) | 22 (13, 38) | 24 (6, 31) | 0.356 |
| ICU mortality rate (%) | 17.9% | 25.7% | 22.6% | 0.616 |
| 28-day mortality rate (%) | 25.6% | 42.2% | 41.9% | 0.023 |
| 90-day mortality rate (%) | 30.8% | 43.1% | 61.3% | 0.038 |
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; ICU, department of intensive care unit