Table 1

Ventilation Mode	Outcome	Number of patients	APACHE2 score Mean+SD	LOS(days)
MV	Dead	83	22.7 ± 5.8
	Alive	64	17.7 ± 5.6	8.1 ± 5.9
CPAP	Dead	29	22.1 ± 5.2
	Alive	69	16.9 ± 6	5.5 ± 2.7
BiPAP	Dead	16	25.7 ± 5.3
	Alive	26	17.5 ± 4.5	3.5 ± 1.4
NIV trial then MV	Dead	23	21.1 ± 5.6
	Alive	88	18.9 ± 5.8	14.1 ± 8.1