Characteristics of patients with ACS stratified by hospitals accredited and not accredited as CPCs
| Characteristics | Before PSM | After PSM | |||
| Total | Not CPC | CPC | Not CPC | CPC | |
| N | 480 455 | 400 710 | 79 745 | 133 193 | 71 146 |
| Female | 171 202 (35.6) | 142 161 (35.5) | 29 041 (36.4) | 46 169 (34.7) | 26 158 (36.8) |
| Age | 64.7±12.4 | 65.0±12.5 | 63.4±11.9 | 64.7±12.5 | 63.5±12.0 |
| Comorbidities | |||||
| HTN | 268 893 (56.0) | 223 201 (55.7) | 45 692 (57.3) | 76 034 (57.1) | 40 411 (56.8) |
| DM | 126 915 (26.4) | 105 907 (26.4) | 21 008 (26.3) | 36 478 (27.4) | 18 595 (26.1) |
| HF | 100 164 (20.8) | 78 680 (19.6) | 21 484 (26.9) | 25 417 (19.1) | 19 869 (27.9) |
| CKD | 31 646 (6.6) | 23 638 (5.9) | 8008 (10.0) | 8209 (6.2) | 7791 (11.0) |
| OMI | 37 894 (7.9) | 31 406 (7.8) | 6488 (8.1) | 10 332 (7.8) | 5531 (7.8) |
| Region | |||||
| Eastern | 273 851 (57.0) | 257 622 (64.3) | 16 229 (20.4) | 94 012 (70.6) | 12 098 (17.0) |
| Western | 68 731 (14.3) | 55 222 (13.8) | 13 509 (16.9) | 12 775 (9.6) | 12 362 (17.4) |
| Central | 137 873 (28.7) | 87 866 (21.9) | 50 007 (62.7) | 26 406 (19.8) | 46 686 (65.6) |
| Hospital type, no. (%) | |||||
| Specialised | 27 109 (5.6) | 11 923 (3.0) | 15 186 (19.0) | 9474 (7.1) | 8619 (12.1) |
| Grade IIIA | 404 447 (84.2) | 333 296 (83.2) | 71 151 (89.2) | 123 656 (92.8) | 64 200 (90.2) |
Age is presented as mean±SD, and the differences between groups were compared using t-tests. Categorical variables are shown as n (%), and the differences between groups were compared using the χ2 test.
ACS, acute coronary syndrome; CKD, chronic kidney disease; CPC, patients admitted to chest pain centres after the corresponding date of accreditation; CPCs, chest pain centres; DM, diabetes mellitus; HF, heart failure; HTN, hypertension; Not CPC, patients admitted to hospitals that had not applied for chest pain centre accreditation; OMI, old myocardial infarction; PSM, propensity score matching.