TABLE 1

Demographics and clinical characteristics by recruiting centres

All centresGenevaValaisGrenoble
Subjects338 (100)153 (45)95 (28)90 (27)
Male sex252 (75)104 (68)85 (90)63 (70)
COPD72 (21)38 (25)14 (15)20 (22)
OHS96 (28)51 (33)21 (22)24 (27)
CBD114 (34)35 (23)57 (60)22 (24)
Neuromuscular disorders39 (12)15 (10)3 (3)21 (23)
Restrictive disorders17 (5)14 (9)0 (0)3 (3)
Time established on home NIV months45 (21–93)57 (21–93)57 (21–105)45 (33–63)
Age years69 (61–75)71 (61–77)69 (62–73)67 (60–72)

Date are presented as n (%) or median (interquartile range). COPD: chronic obstructive pulmonary disease; OHS: obesity hypoventilation syndrome; CBD: central breathing disturbances during sleep; NIV: noninvasive ventilation.