Table 3.

Demographic characteristics of the study population according to the presence or not of acute respiratory distress syndrome (ARDS).

Patients’ Characteristics	Overall n: 85	No ARDS Group n: 54	ARDS Group n: 31	p-Value
Males, n (%)	58 (68%)	37 (68%)	21 (68%)	1.0000
Age <40 years, n (%)	4 (5%)	3 (6%)	1 (3%)	0.9645
Age 40–60 years, n (%)	26 (31%)	16 (31%)	10 (32%)
Age >60 years, n (%)	55 (65%)	35 (65%)	20 (65%)

For sex, we used a 2-tailed Barnard’s exact test; for age, a 2-tailed Fisher’s exact test.