Table 1.

Demographic and Clinical Characteristics of the Patients.

Patient no.	Age	Sex	BMI	Smoking history	History of COPD/asthma	Other chronic pulmonary diseases	Number of days since intubation
Patient 1	67	F	33.22	Never smoked	None	None	2
Patient 2	62	F	49.04	Unknown	COPD	None	3
Patient 3	59	M	45.64	Former smoker	None	None	3
Patient 4	64	M	32.45	Never smoked	None	None	1
Patient 5	61	M	32.03	Never smoked	None	None	2
Patient 6	61	F	28.12	Never smoked	Asthma	Ehlers-Danlos syndrome	2
Patient 7	44	M	35.26	Unknown	None	None	12
Patient 8	35	M	46.23	Never smoked	None	None	3
Patient 9	74	F	23.56	Never smoked	None	History of pulmonary embolism	0
Patient 10	78	M	27.14	Never smoked	None	None	0
Patient 11	52	F	41.14	Former smoker	None	None	2
Patient 12	43	F	25.09	Never smoked	None	None	1
Mean (±SD)	58 (±13)		35 (±9)				3 (±3)

Abbreviations: BMI, body mass index; COPD, chronic obstructive pulmonary disease.