Table 1.
Baseline characteristics by number of comorbidities
| Number of comorbidities |
||||
|---|---|---|---|---|
| Low 0 or 1 | Moderate 2 or 3 | High 4 or 5 | Very high ≥6 | |
| Number of cases (%) | 1071 (21.4%) | 1691 (33.8%) | 1391 (27.8%) | 846 (16.9%) |
| Female (%) | 67.0% | 66.8% | 63.6% | 61.4% |
| Age in years, mean (SD) | 79.5 (9.2) | 81.4 (7.8) | 82.0 (7.8) | 82.7 (7.0) |
| Age group (%) | ||||
| <75 years | 26.2 | 18.3 | 16.4 | 11.9 |
| 75–79 years | 21.8 | 19.3 | 18.0 | 19.0 |
| 80–84 years | 23.2 | 28.0 | 27.0 | 30.4 |
| 85–89 years | 18.7 | 23.8 | 25.8 | 27.3 |
| ≥90 years | 10.2 | 10.6 | 12.8 | 11.4 |
| IMD quintile* (%) | ||||
| First (least deprived) | 24.3 | 25.1 | 24.0 | 20.6 |
| Second | 25.8 | 25.4 | 22.0 | 20.4 |
| Third | 18.7 | 19.8 | 19.4 | 20.9 |
| Fourth | 19.4 | 18.0 | 19.8 | 20.6 |
| Fifth (most deprived) | 11.8 | 11.7 | 14.8 | 17.5 |
| Dementia medication† (%) | 37.3 | 32.9 | 28.1 | 23.8 |
*Only 2959 observations due to missing data.
†Acetylcholinesterase inhibitors or memantine.
IMD, Index of Multiple Deprivation.