Table 1.

Patient demographics and primary clinical indication for NIV

	Group 1 (161 episodes NIV)	Group 2 (134 episodes NIV)	P value
Male	70 (43.5%)	46 (34.3%)	0.109
Age (mean years)	69.7	69.2	0.610
Diagnosis
COPD	129 (80.1%)	110 (82.1%)	0.668
Obesity	11 (6.8%)	13 (9.7%)	0.369
Musculoskeletal	6 (3.7%)	(2.2%)	0.459
Other	15 (9.3%)	8 (6.0%)	0.286