Total patients Not corticosteroids-treated Corticosteroid-treated P value
N. 541 403 138
Age (years) 71.9±16.2 69.9±17 77.5±11.5 <0.001
Male sex (%) 62 62 63 0.773
Former smokers (%) 31 41 34 0.042
Arterial hypertension (%) 72 71 75 0.345
Coronary heart disease (%) 30 28 33 0.290
Heart failure (%) 22 21 24 0.525
History of stroke (%) 12 12 13 0.646
Diabetes (%) 26 24 32 0.074
COPD (%) 32 27 47 <0.001
Paroxysmal AF 15 13 21 0.055
Persistent/Permanent AF 14 11 21 0.004
PSI class II (%) 26 30 14 <0.001
PSI class III (%) 24 25 22
PSI class IV (%) 37 34 45
PSI class V (%) 13 11 19
Aspirin (%) 32 33 32 0.861
Thienopyridines (%) 13 12 14 0.628
Heparins (%) 6 5 8 0.228
OAC (%) 14 13 18 0.120
Statins (%) 30 30 30 0.949