Table 2 Baseline characteristics of the propensity-score matched patients undergoing new implantation of cardiac implantable electronic device in tertiary and non-tertiary hospital.
Characteristics | PPM group (n = 5076 pairs) | ICD group (n = 992 pairs) | ||||
|---|---|---|---|---|---|---|
Tertiary hospital | Non-tertiary hospital | p value | Tertiary hospital | Non-tertiary hospital | p value | |
(n = 5076) | (n = 5076) | (n = 992) | (n = 992) | |||
Age, years | 72.8 ± 10.8 | 72.9 ± 10.7 | 0.90 | 60.2 ± 14.0 | 60.5 ± 14.6 | 0.16 |
Male (%) | 2161 (42.6%) | 2151 (42.4%) | 0.95 | 729 (73.5%) | 722 (72.8%) | 0.62 |
Comorbid conditions (%) | ||||||
Hypertension | 4017 (79.1%) | 4030 (79.4%) | 0.18 | 740 (74.6%) | 750 (75.6%) | 0.26 |
Diabetes | 1904 (37.5%) | 1914 (37.7%) | 0.82 | 408 (41.1%) | 402 (40.5%) | 0.81 |
Diabetes with chronic complications* | 7 (0.1%) | 8 (0.2%) | 0.07 | 1 (0.1%) | 2 (0.2%) | > 0.99 |
Dyslipidemia | 3009 (59.3%) | 3045 (60.0%) | 0.98 | 627 (63.2%) | 643 (64.8%) | 0.80 |
Congestive heart failure | 1191 (23.5%) | 1205 (23.7%) | 0.65 | 578 (58.3%) | 596 (60.1%) | 0.47 |
Peripheral vascular disease | 787 (15.5%) | 798 (15.7%) | 0.54 | 69 (7.0%) | 77 (7.8%) | 0.07 |
Cerebrovascular disease | 1200 (23.6%) | 1206 (23.8%) | 0.47 | 125 (12.6%) | 131 (13.2%) | 0.53 |
Chronic pulmonary disease | 1020 (20.1%) | 1054 (20.8%) | 0.90 | 225 (22.7%) | 224 (22.6%) | 0.83 |
Moderate to severe liver disease | 14 (0.3%) | 11 (0.2%) | 0.69 | 0 (0.0%) | 0 (0.0%) | N/A |
Renal disease | 394 (7.8%) | 386 (7.6%) | 0.32 | 85 (8.6%) | 94 (9.5%) | 0.87 |
Cancer | 132 (2.6%) | 137 (2.7%) | 0.21 | 16 (1.6%) | 18 (1.8%) | 0.39 |
Rheumatic disease | 9 (0.2%) | 9 (0.2%) | 0.45 | 1 (0.1%) | 2 (0.2%) | > 0.99 |
Atrial fibrillation | 1128 (22.2%) | 1091 (21.5%) | 0.77 | 192 (19.4%) | 205 (20.7%) | 0.44 |
Ventricular tachyarrhythmia | 59 (1.2%) | 50 (1.0%) | 0.56 | 139 (14.0%) | 145 (14.6%) | 0.73 |
Aborted cardiac arrest | 15 (0.3%) | 16 (0.3%) | 0.72 | 114 (11.5%) | 112 (11.3%) | 0.59 |
Charlson comorbidity index | 1.91 ± 1.62 | 1.93 ± 1.62 | 0.59 | 2.05 ± 1.63 | 2.10 ± 1.72 | 0.71 |
Type of CIED | ||||||
PPM | 0.40 | |||||
Single chamber | 897 (17.7%) | 913 (18.0%) | – | – | ||
Dual chamber | 4148 (81.7%) | 4140 (81.6%) | – | – | ||
Epicardial system, CRT–P | 31 (0.6%) | 23 (0.5%) | – | – | ||
ICD | 0.59 | |||||
Single chamber | – | – | 508 (51.2%) | 525 (52.9%) | ||
Dual chamber | – | – | 276 (27.8%) | 275 (27.7%) | ||
CRT–D | – | – | 208 (21.0%) | 192 (19.4%) | ||
Indication of ICD | – | – | 0.41 | |||
Primary prevention | 444 (44.8%) | 448 (45.2%) | ||||
Secondary prevention | – | – | 548 (55.2%) | 544 (54.8%) | ||
