Table 2.

Causes of death.

Author	Number of Deaths	Number of ILD Cohort	Causes of death
Tzelepis et al.	6	13	4 respiratory failure,
			1 lung cancer,
			1 sepsis
Arulkumaran, et al.	10	14	5 respiratory failure,
			3 multi-organs failure/generalized sepsis,
			2 unknown
Fernandez et al.	4	9	4 respiratory failure
Tashiro et al.	5	23	1 ARDS,
			1 exacerbation of DAH,
			1 exacerbation of IP,
			1 multi-organs failure,
			1 unknown
Hirayama et al.	118	301	21 pulmonary involvements due to vasculitis;
			42 both pulmonary involvements and infectious diseases;
			39 infectious diseases;
			16 others.
Total	143	360

ARDS: Acute respiratory distress syndrome, DAH: diffuse alveolar hemorrhage, IP: interstitial pneumonia.