Table 1.

Clinical characteristics of observed patients with pneumomediastinum and pneumothorax.

	Case 1	Case 2	Case 3	Case 4	Case 5	Case 6
Pneumomediastinum	1	1	1	1	1	1
Pneumothorax	0	0	0	0	0	1
Age	63	59	68	78	20	76
Smoking	0	0	0	1	0	0
Males	1	1	1	1	1	1
Diabetes	0	0	0	1	0	0
Coronary disease	0	0	0	1	0	0
Hypertension	0	0	1	1	0	0
COPD	0	0	0	0	0	1
NIPVV	1	1	1	1	0	0
Hospitalization length (days)	33	30	51	40	27	41
Overlapping bacterial pneumonia	0	0	1	1	0	1
Death for non-lung failure	0	0	0	0	0	0
Death for lung failure	0	0	0	1	0	0