Table 2.
30-day mortality in patients with acute myocardial infarction in Sweden and the UK, by clinically relevant subgroups
|
Number of deaths/patients |
30-day mortality (%, 95% CI) |
||||
|---|---|---|---|---|---|
| Sweden (n=119 786) | UK (n=391 077) | Sweden (n=119 786) | UK (n=391 077) | ||
| ST-segment elevation | |||||
| STEMI | 3248/37 937 | 17 681/15 7365 | 8·6% (8·3–8·8) | 11·2% (11·1–11·4) | |
| Non-STEMI | 5923/80 724 | 23 828/23 3586 | 7·3% (7·2–7·5) | 10·2% (10·1–10·3) | |
| Severity of myocardial infarction | |||||
| Troponin I (μg/L) | |||||
| <5·0 | 1487/29 793 | 5994/80 991 | 5·0% (4·7–5·2) | 7·4% (7·2–7·6) | |
| 5·0–9·9 | 484/6725 | 1670/17 524 | 7·2% (6·6–7·8) | 9·5% (9·1–10·0) | |
| 10·0–20·0 | 487/6256 | 1560/16 342 | 7·8% (7·1–8·5) | 9·5% (9·1–10·0) | |
| ≥20·0 | 1404/13 255 | 4630/40 765 | 10·6% (10·1–11·1) | 11·4% (11·1–11·7) | |
| Troponin T (μg/L) | |||||
| <0·2 | 724/12 846 | 2382/30 756 | 5·6% (5·3–6·0) | 7·7% (7·5–8·0) | |
| 0·2–0·5 | 598/10 263 | 2060/23 937 | 5·8% (5·4–6·3) | 8·6% (8·3–9·0) | |
| 0·5–1·0 | 559/7963 | 1674/17 774 | 7·0% (6·5–7·6) | 9·4% (9·0–9·9) | |
| ≥1·0 | 2453/22 921 | 6038/50 485 | 10·7% (10·3–11·1) | 12·0% (11·7–12·2) | |
| Admission systolic blood pressure (mm Hg) | |||||
| <110 | 2279/9729 | 10 532/47 796 | 23·4% (22·6–24·3) | 22·0% (21·7–22·4) | |
| 110–140 | 2882/31 750 | 13 331/123 072 | 9·1% (8·8–9·4) | 10·8% (10·7–11) | |
| ≥140 | 2732/62 743 | 11 406/166 274 | 4·4% (4·2–4·5) | 6·9% (6·7–7·0) | |
| Admission heart rate (beats per min) | |||||
| <90 | 4143/73 584 | 18 307/230 648 | 5·6% (5·5–5·8) | 7·9% (7·8–8·0) | |
| 90–120 | 2760/24 235 | 12694/82674 | 11·4% (11–11·8) | 15·4% (15·1–15·6) | |
| ≥120 | 1103/7933 | 4418/24 525 | 13·9% (13·2–14·7) | 18·0% (17·5–18·5) | |
| Demographic characteristics | |||||
| Male | 5069/75 406 | 22 549/25 4110 | 6·7% (6·5–6·9) | 8·9% (8·8–9·0) | |
| Female | 4102/43 255 | 18 823/135 608 | 9·5% (9·2–9·8) | 13·9% (13·7–14·1) | |
| Age | |||||
| <65 years | 717/35 262 | 4487/142 392 | 2·0% (1·9–2·2) | 3·2% (3·1–3·2) | |
| 65–75 years | 1385/29 859 | 7651/94 442 | 4·6% (4·4–4·9) | 8·1% (7·9–8·3) | |
| 75–85 years | 3731/36 324 | 16 288/101 943 | 10·3% (10–10·6) | 16·0% (15·8–16·2) | |
| ≥85 years | 3338/17 216 | 13 083/52 174 | 19·4% (18·8–20) | 25·1% (24·7–25·4) | |
| Year of admission | |||||
| 2004 | 1803/18 294 | 7300/55 447 | 9·9% (9·4–10·3) | 13·2% (12·9–13·4) | |
| 2005 | 1568/17 274 | 6842/54 421 | 9·1% (8·7–9·5) | 12·6% (12·3–12·9) | |
| 2006 | 1368/16 865 | 5966/52 757 | 8·1% (7·7–8·5) | 11·3% (11–11·6) | |
| 2007 | 1224/17 601 | 5547/53 276 | 7·0% (6·6–7·3) | 10·4% (10·2–10·7) | |
| 2008 | 1145/16 647 | 5505/55 851 | 6·9% (6·5–7·3) | 9·9% (9·6–10·1) | |
| 2009 | 1010/15 796 | 5237/58 479 | 6·4% (6–6·8) | 9·0% (8·7–9·2) | |
| 2010 | 1053/16 184 | 5112/60 720 | 6·5% (6·1–6·9) | 8·4% (8·2–8·6) | |
| Risk factors | |||||
| Diabetes | 2657/26 769 | 8444/65 424 | 9·9% (9·6–10·3) | 12·9% (12·7–13·2) | |
| No diabetes | 6371/91 275 | 29 647/307 409 | 7·0% (6·8–7·1) | 9·6% (9·5–9·7) | |
| Current smoker | 1086/24 651 | 5765/104 503 | 4·4% (4·2–4·7) | 5·5% (5·4–5·7) | |
| Non-smoker | 5939/82 205 | 26 463/249 814 | 7·2% (7–7·4) | 10·6% (10·5–10·7) | |
STEMI=ST-segment-elevation myocardial infarction.