Age group, n (%) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
<45 years | 45–54 years | 55–64 years | 65–74 years | 75–84 years | >85 years | <75 years | ⩾75 years | All ages | ||
Treatment | (n = 29) | (n = 34) | (n = 127) | (n = 368) | (n = 612) | (n = 284) | (n = 558) | (n = 896) | (n = 1454) | |
CCB, calcium-channel blocker. | ||||||||||
*Excluding dihydropyridines. | ||||||||||
†Includes quinidine, disopyramide, propafenone and flecainide. | ||||||||||
‡Warfarin or aspirin or clopidogrel. | ||||||||||
§β-Blocker or rate-limiting CCB or digoxin. | ||||||||||
¶Class 1 antiarrhythmic or amiodarone or sotalol. | ||||||||||
β-Blocker | 1 (3.4) | 6 (17.6) | 43 (33.9) | 96 (26.1) | 178 (29.1) | 45 (15.8) | 146 (26.2) | 223 (24.9) | 369 (25.4) | |
CCB* | 5 (17.2) | 11 (32.4) | 73 (57.5) | 165 (44.8) | 267 (43.6) | 71 (25.0) | 254 (45.5) | 338 (37.7) | 592 (40.7) | |
Digoxin | 2 (6.9) | 11 (32.4) | 43 (33.9) | 159 (43.2) | 303 (49.5) | 177 (62.3) | 215 (38.5) | 480 (53.6) | 695 (47.8) | |
Class I antiarrhythmics† | 3 (10.3) | 4 (11.8) | 8 (6.3) | 13 (3.5) | 8 (1.3) | 1 (0.4) | 28 (5.0) | 9 (1.0) | 37 (2.5) | |
Amiodarone | 2 (6.9) | 6 (17.6) | 13 (10.2) | 47 (12.8) | 73 (11.9) | 12 (4.2) | 68 (12.2) | 85 (9.5) | 153 (10.5) | |
Sotalol | 2 (6.9) | 2 (5.9) | 12 (9.4) | 26 (7.1) | 29 (4.7) | 7 (2.5) | 42 (7.5) | 36 (4.0) | 78 (5.4) | |
Warfarin | 5 (17.2) | 14 (41.2) | 62 (48.8) | 176 (47.8) | 246 (40.2) | 60 (21.1) | 257 (46.1) | 306 (34.2) | 563 (38.7) | |
Aspirin | 2 (6.9) | 4 (11.8) | 48 (37.8) | 151 (41.0) | 290 (47.4) | 159 (56.0) | 205 (36.7) | 449 (50.1) | 654 (45.0) | |
Clopidogrel | 0 (0.0) | 0 (0.0) | 4 (3.1) | 13 (3.5) | 19 (3.1) | 8 (2.8) | 17 (3.0) | 27 (3.0) | 44 (3.0) | |
Any antithrombotic‡ | 7 (24.1) | 16 (47.1) | 96 (75.6) | 308 (83.7) | 495 (80.9) | 209 (73.6) | 427 (76.5) | 704 (78.6) | 1131 (77.8) | |
Negative chronotropes§ | 7 (24.1) | 16 (47.1) | 91 (71.1) | 279 (75.8) | 466 (76.1) | 216 (76.1) | 393 (70.4) | 682 (76.1) | 1075 (73.9) | |
Any antiarrhythmic¶ | 7 (24.1) | 11 (32.4) | 32 (25.2) | 81 (22.0) | 108 (17.6) | 20 (7.0) | 131 (23.5) | 128 (14.3) | 259 (17.8) |