Proportion of obese (BMI ⩾30 kg/m2) and non-obese (BMI <30 kg/m2) patients who fulfilled each ARDS criterion on at least 1 day during their ICU stay
| ARDS criteria | Number (%) of patients who fulfilled criteria on at least one ICU day | ||
| BMI <30 kg/m2 (n = 1315) | BMI ⩾30 kg/m2 (n = 480) | p Value | |
| Intubated with PaO2/FiO2 ⩽200 | 569 (43%) | 249 (52%) | 0.001 |
| Bilateral infiltrates on chest radiograph | 764 (58%) | 286 (59%) | 0.6 |
| Exclusion of left atrial heart failure | 1154 (88%) | 404 (84%) | <0.05 |
ARDS, acute respiratory distress syndrome; BMI, body mass index; ICU, intensive care unit.