Average crude rates by age group for lowest and highest mortality hospital quartiles in the early and late periods
| Lowest quartile | Highest quartile | |||||||
| Age | Crude rate % (95% CI) | OR cf <50 | OR cf previous age | Age | Crude rate % (95% CI) | OR cf <50 | OR cf previous age | OR cf lowest quartile |
| Early period | Early period | |||||||
| <50 | 3.9 (3.0 to 4.8) | 1 | 1 | <50 | 7.3 (5.9 to 8.9) | 1 | 1 | 1.94 |
| 50–59 | 11.3 (9.8 to 12.9) | 3.1 | 3.1 | 50–59 | 18.7 (16.5 to 21.1) | 2.9 | 2.6 | 1.81 |
| 60–69 | 22.8 (20.8 to 24.9) | 7.3 | 2.3 | 60–69 | 32.9 (30.4 to 35.5) | 6.2 | 1.8 | 1.66 |
| 70–79 | 34.3 (32.2 to 36.4) | 12.9 | 1.8 | 70–79 | 45.0 (42.6 to 47.4) | 10.4 | 1.4 | 1.57 |
| 80–89 | 42.8 (40.7 to 44.9) | 18.4 | 1.4 | 80–89 | 52.6 (50.4 to 54.8) | 14.1 | 1.2 | 1.48 |
| 90+ | 48.4 (44.8 to 52.0) | 23.1 | 1.3 | 90+ | 59.5 (55.9 to 63.1) | 18.7 | 1.1 | 1.57 |
| Late period | Late period | |||||||
| <50 | 1.1 (0.3 to 2.8) | 1 | 1 | <50 | 3.5 (1.8 to 6.1) | 1 | 1 | 3.26 |
| 50–59 | 4.6 (2.2 to 8.3) | 4.3 | 4.3 | 50–59 | 14.1 (10.1 to 19.1) | 4.5 | 4.0 | 3.40 |
| 60–69 | 13.8 (9.7 to 18.9) | 14.4 | 3.3 | 60–69 | 22.9 (18.5 to 27.7) | 8.2 | 1.6 | 1.86 |
| 70–79 | 17.4 (13.5 to 21.9) | 18.9 | 1.3 | 70–79 | 36.5 (32.2 to 40.9) | 15.8 | 1.6 | 2.73 |
| 80–89 | 25.3 (21.2 to 29.8) | 30.5 | 1.6 | 80–89 | 45.4 (41.4 to 49.4) | 22.9 | 1.2 | 2.46 |
| 90+ | 33.8 (26.9 to 41.2) | 45.9 | 1.5 | 90+ | 48.6 (42.1 to 55.2) | 26.1 | 1.1 | 1.85 |
cf, compared with.