Hospital A (n=762) | Hospital B (n=272) | Hospital C (n=315) | Hospital D (n=300) | |
Age (mean; SD)* | 65.1 (12.7) | 62.9 (12.5) | 63.8 (12.4) | 63.4 (13.0) |
Male sex | 512/655 (78%) | 183/246 (74%) | 238/315 (76%) | 226/300 (75%) |
Current smoker | 191/660 (29%) | 95/240 (40%) | 95/300 (32%) | 97/273 (36%) |
IMD score (median; IQR)† | 12.2 (7.1–21.7) | 20.5 (10.1–39.2) | – | – |
WIMD rank (median; IQR)‡ | – | – | 817 (334–1478) | 902 (553–1314.5) |
Diabetes | 91/700 (13%) | 33/243 (14%) | 70/310 (23%) | 37/283 (13%) |
Hypertension | 275/663 (41%) | 42/238 (18%) | 143/282 (51%) | 141/272 (52%) |
Previous PCI | 71/701 (10%) | 35/242 (14%) | 27/310 (9%) | 24/299 (8%) |
Previous CABG | 21/704 (3%) | 7/243 (3%) | 5/308 (2%) | 4/285 (1%) |
Previous MI | 88/707 (12%) | 40/240 (17%) | 33/312 (11%) | 32/288 (11%) |
PPCI | 597/655 (91%) | 220/243 (91%) | 267/295 (91%) | 223/259 (86%) |
No PPCI | 58/655 (9%) | 23/243 (9%) | 28/295 (9%) | 36/259 (14%) |
Length of stay (median; IQR) days§ | 3 (2–4) | 2 (1–3) | 3 (1–4) | 2 (1–4) |
Values are numbers (percentages) unless otherwise stated.
The total number of participants in each hospital are patients with any data available.
Missing data by hospital (hospital A, hospital B, hospital C, hospital D):
*Eight patients (1, 0, 0, 7).
†One hundred and seventy-nine patients (169, 10, not collected for hospitals C and D).
‡Data missing for 92 patients (not collected for hospitals A and B, 80, 12).
§Data missing for 250 patients (109, 2, 17, 122).
CABG, coronary artery bypass grafting; IMD, Index of Multiple Deprivation (low value reflects low level of multiple deprivation); MI, myocardial infarction; PCI, percutaneous coronary intervention; PPCI, primary percutaneous coronary intervention; SMD, standardised mean difference; WIMD, Welsh Index of Multiple Deprivation (low value reflects high level of multiple deprivation).