Table 3. Comparison of outcome of patients on invasive and non-invasive positive pressure ventilation.

ICU, Intensive Care Unit; IPPV, Invasive Positive Pressure Ventilation; NIPPV, Non-invasive Positive Pressure Ventilation; SD, Standard Deviation.

Patient Outcome	NIPPV (n=30) (Mean ± SD)	IPPV (n=30) (Mean ± SD)	P value
Duration of ventilation, days	4.9 ± 1.8	6.1 ± 2.5	0.03
Duration of ICU stay, days	10.3 ± 1.3	17.3 ± 2.1	<0.0001
Post-ICU hospital stay, days	13.4 ± 8.7	22.9 ± 6.7	<0.0001
In-ICU mortality n (%)	4 (13.3%)	12 (40%)	0.01
Post-ICU mortality n (%)	2 (6.7%)	5 (16.7%)	0.13
Failure of NIPPV n (%)	6 (20%)