Table 1. Number of hospitalised patients and percentage of operated.
| 1999 | 2000 | 2001 | 2002 | |||||||||||||||
| Men | Women | Men | Women | Men | Women | Men | Women | |||||||||||
| Number | (%) | Number | (%) | Number | (%) | Number | (%) | Number | (%) | Number | (%) | Number | (%) | Number | (%) | |||
| Total | 13202 | (23.4) | 6316 | (12.4) | 13266 | (28.6) | 6367 | (15.7) | 13402 | (32.5) | 6503 | (19.3) | 12722 | (36.7) | 6196 | (20.7) | ||
| Diagnosis | Myocardial infarction | 4624 | (14.7) | 2165 | (7.2) | 5170 | (23.2) | 2405 | (11.4) | 5220 | (27.8) | 2710 | (17.3) | 5121 | (32.3) | 2659 | (17.1) | |
| Angina | 2852 | (20.8) | 1197 | (11.4) | 2971 | (33.4) | 1329 | (23.6) | 2957 | (37.1) | 1253 | (25.6) | 2352 | (39.9) | 1027 | (26.2) | ||
| Chronic ischaemia | 4317 | (42.1) | 2004 | (24.5) | 3668 | (43.4) | 1650 | (24.7) | 3884 | (46.1) | 1552 | (30.0) | 3968 | (51.8) | 1577 | (35.3) | ||
| Chest pain | 1409 | (0.1) | 950 | (0) | 1457 | (0.4) | 983 | (0.2) | 1341 | (0.5) | 988 | (0.1) | 1281 | (1.1) | 933 | (0.2) | ||
| Age group | ⩽40 | 397 | (16.6) | 111 | (9.9) | 361 | (19.4) | 114 | (12.3) | 432 | (20.8) | 92 | (12.0) | 338 | (23.4) | 86 | (10.5) | |
| 41–50 | 1397 | (27.4) | 263 | (14.1) | 1326 | (33.2) | 253 | (17.4) | 1272 | (36.7) | 232 | (20.7) | 1214 | (42.3) | 240 | (22.5) | ||
| 51–60 | 3069 | (28.0) | 727 | (15.8) | 3140 | (33.9) | 792 | (19.0) | 2901 | (38.9) | 800 | (23.0) | 2758 | (40.9) | 685 | (24.7) | ||
| 61–70 | 4413 | (26.1) | 1651 | (19.0) | 4407 | (31.4) | 1625 | (23.8) | 4470 | (36) | 1666 | (27.8) | 4118 | (40.7) | 1564 | (29.5) | ||
| 71–80 | 3025 | (19.8) | 2084 | (13.4) | 3198 | (24.6) | 2097 | (17.7) | 3441 | (28.6) | 2297 | (21.5) | 3342 | (34.4) | 2118 | (23.1) | ||
| >81 | 901 | (4.1) | 1480 | (1.8) | 834 | (5.8) | 1486 | (2.1) | 886 | (7.8) | 1416 | (3.9) | 952 | (12.3) | 1503 | (6.5) | ||
| Second diagnosis | Congestive heart failure | Yes | 671 | (11.0) | 470 | (5.1) | 688 | (13.2) | 554 | (6.3) | 701 | (16.0) | 520 | (8.8) | 673 | (16.2) | 600 | (7.2) |
| No | 12531 | (24.1) | 5846 | (13.0) | 12578 | (29.4) | 5813 | (16.6) | 12701 | (33.4) | 5983 | (20.2) | 12049 | (37.8) | 5596 | (22.1) | ||
| Diabetes mellitus¶ | Yes | 1205 | (22.6) | 871 | (13.6) | 1498 | (31.4) | 994 | (19.6) | 1614 | (31.5) | 1100 | (20.4) | 1394 | (32.8) | 1021 | (20.5) | |
| No | 11997 | (23.5) | 5445 | (12.2) | 11768 | (28.2) | 5373 | (14.9) | 11788 | (32.6) | 5403 | (19.1) | 11328 | (37.1) | 5175 | (20.7) | ||
| APR-DRG Severity of illness | 1 | – | – | – | – | 8909 | (30.3) | 3794 | (18.6) | – | – | – | 8441 | (40.4) | 3646 | (25.4) | ||
| 2 | – | – | – | – | 3348 | (24.4) | 1852 | (11.1) | – | – | – | 3265 | (28.2) | 1846 | (13.2) | |||
| 3 | – | – | – | – | 802 | (28.9) | 574 | (12.0) | – | – | – | 798 | (35.5) | 539 | (15.2) | |||
| 4 | – | – | – | – | 206 | (20.4) | 147 | (10.2) | – | – | – | 218 | (23.4) | 165 | (17.0) | |||
| APR-DRG Risk of mortality | 1 | – | – | – | – | 10657 | (31.2) | 4568 | (18.3) | – | – | – | 10032 | (40.5) | 4356 | (24.7) | ||
| 2 | – | – | – | – | 1749 | (17.9) | 1164 | (9.8) | – | – | – | 1814 | (23.1) | 1175 | (11.7) | |||
| 3 | – | – | – | – | 359 | (18.4) | 245 | (8.2) | – | – | – | 408 | (19.1) | 333 | (9.3) | |||
| 4 | – | – | – | – | 500 | (16.2) | 390 | (7.4) | – | – | – | 468 | (22.7) | 332 | (11.4) | |||
Myocardial infarction, 410.XX ICD9-CM; chest pain, 786.5X ICD9-CM; angioplasty, 36.0X ICD9-CM; angina, 413.XX ICD9-CM; congestive heart failure, 428.X ICD9-CM; coronary artery bypass, 36.1X-36.2X ICD9-CM; chronic ischaemia, 414.XX ICD9-CM; diabetes mellitus, 250.XX ICD9-CM.