Table 2

Baseline clinical characteristics

VariablesTotal Non-ablation centres ( n = 23) Ablation centres ( n = 20) P
Patient number, total1256584672
Outpatients694 (55.3%)300 (51.4%)394 (58.6%)0.323
Age, years68 ± 1269 ± 1266 ± 11<0.01
Males672 (53.5%)338 (57.9%)424 (63.1%)0.058
Ejection fraction, %54 ± 1054 ± 954 ± 100.793
Left atrium diameter, mm4.6 ± 0.74.6 ± 0.74.6 ± 0.80.6
Hypertension487 (38%)246 (42%)241 (36%)<0.01
Structural heart disease468 (37%)226 (38%)242 (36%)0.113
 Ischaemic14782650.07
 Hypertensive3719180.811
 Dilated963462<0.01
 Valvular15179720.37
 Other3712250.05
New-onset AF297 (23.6%)174 (29.8%)123 (18.3%)0.047
Idiopathic AF301 (24%)110 (18.8%)191 (28.4%)0.039
Paroxysmal AF417 (33%)152 (26%)265 (39%)0.03
Persistent AF677 (54%)333 (57%)344 (51%)<0.001
Long-lasting persistent/permanent162 (13%)99 (17%)63 (10%)<0.001
Duration of AF (years)2 (0–5)1 (0–4)3 (1–5)0.01
Number of arrhythmic episodes during the last year1 (1–3)1 (1–2)1 (1–4)<0.01
Number of hospitalizations for AF during the last year0 (0–1)1 (0–1)1 (1–2)0.252
Number of antiarrhythmic drugs1 (0–2)1 (0–1)1 (1–2)<0.01
Amiodarone467 (37.2%)193 (33%)274 (40.8%)0.189
SSS: brady–tachy form108 (8.5%)69 (11.8%)39 (5.8%)0.06
Cardiac pacing134 (10.7%)68 (11.6%)66 (9.8%)0.741
Previous catheter ablation116 (9.2%)24 (4.1%)92 (13.7%)<0.01
Thrombo-embolic risk ≥11053 (83.8%)502 (86%)551(82%)0.210
OAT contraindications36 (2.9%)20 (3.4%)16 (2.4%)0.268
Symptoms correlated to AF914 (72.8%)384 (65.8%)530 (78.9%)0.006
Significant symptom654 (52.1%)244 (41.8%)410 (61%)0.01
QoL impairment406 (32.3%)159 (27.2%)247 (36.8%)0.232
EF deterioration due to AF144 (11.5%)74 (12.7%)70 (10.4%)0.373
Refractoriness to medical therapy492 (39.2%)136 (23.3%)356 (53%)<0.01
VariablesTotal Non-ablation centres ( n = 23) Ablation centres ( n = 20) P
Patient number, total1256584672
Outpatients694 (55.3%)300 (51.4%)394 (58.6%)0.323
Age, years68 ± 1269 ± 1266 ± 11<0.01
Males672 (53.5%)338 (57.9%)424 (63.1%)0.058
Ejection fraction, %54 ± 1054 ± 954 ± 100.793
Left atrium diameter, mm4.6 ± 0.74.6 ± 0.74.6 ± 0.80.6
Hypertension487 (38%)246 (42%)241 (36%)<0.01
Structural heart disease468 (37%)226 (38%)242 (36%)0.113
 Ischaemic14782650.07
 Hypertensive3719180.811
 Dilated963462<0.01
 Valvular15179720.37
 Other3712250.05
New-onset AF297 (23.6%)174 (29.8%)123 (18.3%)0.047
Idiopathic AF301 (24%)110 (18.8%)191 (28.4%)0.039
Paroxysmal AF417 (33%)152 (26%)265 (39%)0.03
Persistent AF677 (54%)333 (57%)344 (51%)<0.001
Long-lasting persistent/permanent162 (13%)99 (17%)63 (10%)<0.001
Duration of AF (years)2 (0–5)1 (0–4)3 (1–5)0.01
Number of arrhythmic episodes during the last year1 (1–3)1 (1–2)1 (1–4)<0.01
Number of hospitalizations for AF during the last year0 (0–1)1 (0–1)1 (1–2)0.252
Number of antiarrhythmic drugs1 (0–2)1 (0–1)1 (1–2)<0.01
Amiodarone467 (37.2%)193 (33%)274 (40.8%)0.189
SSS: brady–tachy form108 (8.5%)69 (11.8%)39 (5.8%)0.06
Cardiac pacing134 (10.7%)68 (11.6%)66 (9.8%)0.741
Previous catheter ablation116 (9.2%)24 (4.1%)92 (13.7%)<0.01
Thrombo-embolic risk ≥11053 (83.8%)502 (86%)551(82%)0.210
OAT contraindications36 (2.9%)20 (3.4%)16 (2.4%)0.268
Symptoms correlated to AF914 (72.8%)384 (65.8%)530 (78.9%)0.006
Significant symptom654 (52.1%)244 (41.8%)410 (61%)0.01
QoL impairment406 (32.3%)159 (27.2%)247 (36.8%)0.232
EF deterioration due to AF144 (11.5%)74 (12.7%)70 (10.4%)0.373
Refractoriness to medical therapy492 (39.2%)136 (23.3%)356 (53%)<0.01

AF, atrial fibrillation; SSS, sick sinus syndrome; OAT, oral anticoagulant therapy; QoL, quality of life; EF, ejection fraction.

Table 2

Baseline clinical characteristics

VariablesTotal Non-ablation centres ( n = 23) Ablation centres ( n = 20) P
Patient number, total1256584672
Outpatients694 (55.3%)300 (51.4%)394 (58.6%)0.323
Age, years68 ± 1269 ± 1266 ± 11<0.01
Males672 (53.5%)338 (57.9%)424 (63.1%)0.058
Ejection fraction, %54 ± 1054 ± 954 ± 100.793
Left atrium diameter, mm4.6 ± 0.74.6 ± 0.74.6 ± 0.80.6
Hypertension487 (38%)246 (42%)241 (36%)<0.01
Structural heart disease468 (37%)226 (38%)242 (36%)0.113
 Ischaemic14782650.07
 Hypertensive3719180.811
 Dilated963462<0.01
 Valvular15179720.37
 Other3712250.05
New-onset AF297 (23.6%)174 (29.8%)123 (18.3%)0.047
Idiopathic AF301 (24%)110 (18.8%)191 (28.4%)0.039
Paroxysmal AF417 (33%)152 (26%)265 (39%)0.03
Persistent AF677 (54%)333 (57%)344 (51%)<0.001
Long-lasting persistent/permanent162 (13%)99 (17%)63 (10%)<0.001
Duration of AF (years)2 (0–5)1 (0–4)3 (1–5)0.01
Number of arrhythmic episodes during the last year1 (1–3)1 (1–2)1 (1–4)<0.01
Number of hospitalizations for AF during the last year0 (0–1)1 (0–1)1 (1–2)0.252
Number of antiarrhythmic drugs1 (0–2)1 (0–1)1 (1–2)<0.01
Amiodarone467 (37.2%)193 (33%)274 (40.8%)0.189
SSS: brady–tachy form108 (8.5%)69 (11.8%)39 (5.8%)0.06
Cardiac pacing134 (10.7%)68 (11.6%)66 (9.8%)0.741
Previous catheter ablation116 (9.2%)24 (4.1%)92 (13.7%)<0.01
Thrombo-embolic risk ≥11053 (83.8%)502 (86%)551(82%)0.210
OAT contraindications36 (2.9%)20 (3.4%)16 (2.4%)0.268
Symptoms correlated to AF914 (72.8%)384 (65.8%)530 (78.9%)0.006
Significant symptom654 (52.1%)244 (41.8%)410 (61%)0.01
QoL impairment406 (32.3%)159 (27.2%)247 (36.8%)0.232
EF deterioration due to AF144 (11.5%)74 (12.7%)70 (10.4%)0.373
Refractoriness to medical therapy492 (39.2%)136 (23.3%)356 (53%)<0.01
VariablesTotal Non-ablation centres ( n = 23) Ablation centres ( n = 20) P
Patient number, total1256584672
Outpatients694 (55.3%)300 (51.4%)394 (58.6%)0.323
Age, years68 ± 1269 ± 1266 ± 11<0.01
Males672 (53.5%)338 (57.9%)424 (63.1%)0.058
Ejection fraction, %54 ± 1054 ± 954 ± 100.793
Left atrium diameter, mm4.6 ± 0.74.6 ± 0.74.6 ± 0.80.6
Hypertension487 (38%)246 (42%)241 (36%)<0.01
Structural heart disease468 (37%)226 (38%)242 (36%)0.113
 Ischaemic14782650.07
 Hypertensive3719180.811
 Dilated963462<0.01
 Valvular15179720.37
 Other3712250.05
New-onset AF297 (23.6%)174 (29.8%)123 (18.3%)0.047
Idiopathic AF301 (24%)110 (18.8%)191 (28.4%)0.039
Paroxysmal AF417 (33%)152 (26%)265 (39%)0.03
Persistent AF677 (54%)333 (57%)344 (51%)<0.001
Long-lasting persistent/permanent162 (13%)99 (17%)63 (10%)<0.001
Duration of AF (years)2 (0–5)1 (0–4)3 (1–5)0.01
Number of arrhythmic episodes during the last year1 (1–3)1 (1–2)1 (1–4)<0.01
Number of hospitalizations for AF during the last year0 (0–1)1 (0–1)1 (1–2)0.252
Number of antiarrhythmic drugs1 (0–2)1 (0–1)1 (1–2)<0.01
Amiodarone467 (37.2%)193 (33%)274 (40.8%)0.189
SSS: brady–tachy form108 (8.5%)69 (11.8%)39 (5.8%)0.06
Cardiac pacing134 (10.7%)68 (11.6%)66 (9.8%)0.741
Previous catheter ablation116 (9.2%)24 (4.1%)92 (13.7%)<0.01
Thrombo-embolic risk ≥11053 (83.8%)502 (86%)551(82%)0.210
OAT contraindications36 (2.9%)20 (3.4%)16 (2.4%)0.268
Symptoms correlated to AF914 (72.8%)384 (65.8%)530 (78.9%)0.006
Significant symptom654 (52.1%)244 (41.8%)410 (61%)0.01
QoL impairment406 (32.3%)159 (27.2%)247 (36.8%)0.232
EF deterioration due to AF144 (11.5%)74 (12.7%)70 (10.4%)0.373
Refractoriness to medical therapy492 (39.2%)136 (23.3%)356 (53%)<0.01

AF, atrial fibrillation; SSS, sick sinus syndrome; OAT, oral anticoagulant therapy; QoL, quality of life; EF, ejection fraction.

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