Characteristics of hospital admissions, by year
| Characteristic | Study year, no. (%) * | |||
|---|---|---|---|---|
| 1994 | 1999 | 2004 | 2009 | |
| Ontario adult population, no. | 7 866 531 | 8 410 845 | 9 259 115 | 9 967 803 |
| Adults with ≥ 1 admissions to hospital † | 691 414 (8.8) | 615 461 (7.3) | 621 166 (6.7) | 627 862 (6.3) |
| Death within 1 yr of admission date ‡ | 63 839 (9.2) | 66 698 (10.8) | 69 021 (11.1) | 72 763 (11.6) |
| Age, yr, median (IQR) | 51 (32–70) | 55 (35–73) | 56 (36–74) | 58 (36–75) |
| Female sex | 435 799 (63.0) | 387 720 (63.0) | 388 313 (62.5) | 391 232 (62.3) |
| Charlson Comorbidity Index score | ||||
| 0 | 471 306 (68.2) | 384 044 (62.4) | 399 750 (64.4) | 376 922 (60.0) |
| 1–2 | 137 215 (19.8) | 136 196 (22.1) | 126 145 (20.3) | 135 433 (21.6) |
| 3–4 | 46 152 (6.7) | 51 497 (8.4) | 47 765 (7.7) | 59 185 (9.4) |
| ≥ 5 | 36 741 (5.3) | 43 724 (7.1) | 47 506 (7.6) | 56 322 (9.0) |
| Elective admission | 327 629 (47.4) | 261 631 (42.5) | 260 404 (41.9) | 263 435 (42.0) |
| Arrival by ambulance | 111 309 (16.1) | 116 887 (19.0) | 126 044 (20.3) | 156 021 (24.8) |
| Admitting service | ||||
| Medicine | 285 402 (41.3) | 273 770 (44.5) | 278 922 (44.9) | 280 837 (44.7) |
| Surgical | 222 641 (32.2) | 182 414 (29.6) | 183 050 (29.5) | 188 021 (29.9) |
| Obstetrics–Gynecology | 183 371 (26.5) | 159 277 (25.9) | 159 194 (25.6) | 159 004 (25.3) |
| Primary diagnosis group | ||||
| Complications of pregnancy, childbirth and puerperium | 148 327 (21.5) | 128 010 (20.9) | 130 534 (21.1) | 134 177 (21.5) |
| Diseases of the circulatory system | 102 260 (14.8) | 101 418 (16.5) | 95 409 (15.4) | 87 539 (14.0) |
| Diseases of the digestive system | 87 863 (12.7) | 66 718 (10.9) | 67 295 (10.9) | 67 282 (10.8) |
| Diseases of the genitourinary system | 62 609 (9.1) | 53 286 (8.7) | 49 077 (7.9) | 45 720 (7.3) |
| Neoplasms | 48 244 (7.0) | 47 564 (7.7) | 48 102 (7.8) | 48 447 (7.7) |
| Injury and poisoning | 50 056 (7.3) | 45 738 (7.5) | 46 834 (7.6) | 48 320 (7.7) |
| Diseases of the musculoskeletal system and connective tissue | 41 532 (6.0) | 37 560 (6.1) | 40 841 (6.6) | 47 487 (7.6) |
| Diseases of the respiratory system | 42 210 (6.1) | 41 359 (6.7) | 35 202 (5.7) | 36 872 (5.9) |
| Symptoms, signs and ill-defined conditions | 35 745 (5.2) | 35 044 (5.7) | 37 963 (6.1) | 32 513 (5.2) |
| Endocrine, nutritional, metabolic diseases and immunity disorders | 13 131 (1.9) | 12 622 (2.1) | 14 075 (2.3) | 15 431 (2.5) |
| Factors influencing health status and contact with health services | 9 613 (1.4) | 8 603 (1.4) | 16 467 (2.7) | 20 245 (3.2) |
| Diseases of the nervous system and sense organs | 18 414 (2.7) | 11 597 (1.9) | 12 584 (2.0) | 11 190 (1.8) |
| Infectious and parasitic diseases | 7 437 (1.1) | 6 614 (1.1) | 7 399 (1.2) | 11 212 (1.8) |
| Mental disorders | 8 164 (1.2) | 6 727 (1.1) | 6 852 (1.1) | 7 990 (1.3) |
| Diseases of the skin and subcutaneous tissue | 8 248 (1.2) | 5 712 (0.9) | 5 212 (0.8) | 4 799 (0.8) |
| Diseases of the blood and blood-forming organs | 4 108 (0.6) | 3 909 (0.6) | 4 740 (0.8) | 5 129 (0.8) |
| Other | 1 735 (0.3) | 1 299 (0.2) | 895 (0.1) | 1 089 (0.2) |