Baseline data for 19 475 study patients who underwent RFCA procedures stratified by indication
| Variable | PSVT | WPW | AFL | AF | VT | P value |
| Number of patients | 12 796 | 3051 | 1854 | 1162 | 612 | – |
| Age (years), median (IQR) | 47.0 (33.5, 58.6) | 36.3 (22.8, 49.7) | 62.9 (51.7, 73.1) | 56.9 (48.4, 65.5) | 43.1 (28.7, 55.2) | <0.001 |
| Age group (years) | <0.001 | |||||
| 0–18 | 863 (6.7) | 379 (12.4) | 15 (0.8) | 0 (0.0) | 46 (7.5) | |
| 19–44 | 4930 (38.5) | 1619 (53.1) | 260 (14.0) | 216 (18.6) | 289 (47.2) | |
| 45–54 | 2938 (23.0) | 579 (19.0) | 329 (17.7) | 285 (24.5) | 123 (20.1) | |
| 55–64 | 2083 (16.3) | 308 (10.1) | 407 (22.0) | 354 (30.5) | 75 (12.3) | |
| 65–74 | 1344 (10.5) | 130 (4.3) | 472 (25.5) | 222 (19.1) | 51 (8.3) | |
| 75+ | 638 (5.0) | 36 (1.2) | 371 (20.0) | 85 (7.3) | 28 (4.6) | |
| Gender, male | 5402 (42.2) | 1988 (65.2) | 1332 (71.8) | 838 (72.1) | 327 (53.4) | <0.001 |
| Diabetes | 910 (7.1) | 113 (3.7) | 301 (16.2) | 134 (11.5) | 32 (5.2) | <0.001 |
| Hypertension | 1723 (13.5) | 275 (9.0) | 535 (28.9) | 326 (28.1) | 74 (12.1) | <0.001 |
| COPD | 286 (2.2) | 22 (0.7) | 103 (5.6) | 28 (2.4) | 15 (2.5) | <0.001 |
| CKD | 150 (1.2) | 12 (0.4) | 71 (3.8) | 11 (0.9) | 5 (0.8) | <0.001 |
| CAD | 594 (4.6) | 87 (2.9) | 288 (15.5) | 154 (13.3) | 45 (7.4) | <0.001 |
| Heart failure | 73 (0.6) | 21 (0.7) | 205 (11.1) | 53 (4.6) | 25 (4.1) | <0.001 |
| High-activity centre* | 7267 (56.8) | 1880 (61.6) | 1317 (71.0) | 976 (84.0) | 317 (51.8) | <0.001 |
| Complicated CHD | 10 (0.1) | 3 (0.1) | 16 (0.9) | 2 (0.2) | 1 (0.2) | <0.001 |
| TOF | 3 (0.0) | 0 (0.0) | 11 (0.6) | 1 (0.1) | 1 (0.2) | <0.001 |
| Other complicated CHD | 7 (0.1) | 3 (0.1) | 5 (0.3) | 1 (0.1) | 0 (0.0) | 0.045 |
| Simple CHD † | 69 (0.5) | 31 (1.0) | 66 (3.6) | 9 (0.8) | 9 (1.5) | <0.001 |
| VSD | 15 (0.1) | 6 (0.2) | 25 (1.3) | 0 (0.0) | 4 (0.7) | <0.001 |
| ASDII | 50 (0.4) | 10 (0.3) | 34 (1.8) | 9 (0.8) | 4 (0.7) | <0.001 |
| Ebstein | 4 (0.0) | 18 (0.6) | 6 (0.3) | 0 (0.0) | 0 (0.0) | <0.001 |
| Other simple CHD | 4 (0.0) | 2 (0.1) | 6 (0.3) | 0 (0.0) | 1 (0.2) | <0.001 |
*Defined as 100 operations per year.
†The discrepancy between the sums of subgroups and the total is due to the possibility that one patient might have two CHDs.
AF, atrial fibrillation; AFL, atrial flutter; ASD, atrial septal defect; CAD, coronary artery disease; CHD, congenital heart disease; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; Ebstein, Ebstein’s anomaly; PSVT, paroxysmal supraventricular tachycardia; RFCA, radiofrequency catheter ablation; TOF, Tetralogy of Fallot; VSD, ventricular septal defect; VT, ventricular tachycardia; WPW, Wolff-Parkinson-White syndrome.