Table 1

Comparisons between diagnosed patients (DP) and undiagnosed patients (UP)

All (n=30)Diagnosed patients group (n=13)Undiagnosed patients group (n=17)p Value
Age at onset of symptoms (years)64.2 (12.0)56.7 (14.1)70.0 (5.5)0.006
Age at intubation of trachea (years)67.1 (8.0)62.0 (7.8)71.0 (5.8)0.001
Median time (IQR) between first symptoms and respiratory failure (months)12.9 (18.0)21.2 (38.8)9.1 (10.4)0.02
Length of stay in ICU (days)40.3 (37.8)28.1 (40.4)49.6 (34.0)0.1
Length of stay on the Respiratory Support and Sleep Centre (days)33.6 (23.9)27.9 (15.7)37.9 (28.3)0.2
No weaned from invasive ventilation14680.02
Time to wean (days)51.4 (38.1)25.8 (10.3)70.5 (40.6)0.03