Table 1: Baseline characteristics and prevalence of multimorbidity by two measures.
CI, confidence interval; SIMD, Scottish Index of Multiple Deprivation; IQR, interquartile range. a 314 patients had missing values for SIMD category and 576 patients had missing values for Urban Rural category.
| Total | Charlson ≥2 conditions | Tonelli ≥2 conditions | ||||
|---|---|---|---|---|---|---|
| n | (%) | % | (95% CI) | % | (95% CI) | |
| All patients | 41,545 | 15.1% | (14.8-15.5) | 27.4% | (27.0-27.8) | |
| Sex | ||||||
| Male | 19,677 | (47.4%) | 16.5% | (16.0-17.0) | 27.1% | (26.4-27.7) |
| Female | 21,868 | (52.6%) | 13.9% | (13.5-14.4) | 27.7% | (27.1-28.3) |
| Age groups | ||||||
| 18-29 | 4,677 | (11.3%) | 1.1% | (0.8-1.4) | 5.9% | (5.3-6.6) |
| 30-44 | 5,932 | (14.3%) | 3.7% | (3.2-4.2) | 11.0% | (10.3-11.9) |
| 45-59 | 8,671 | (20.9%) | 8.4% | (7.8-9.0) | 19.0% | (18.2-19.8) |
| 60-74 | 11,160 | (26.9%) | 19.3% | (18.6-20.1) | 32.8% | (31.9-33.7) |
| 75-89 | 9,705 | (23.4%) | 28.3% | (27.4-29.2) | 45.8% | (44.8-46.8) |
| ≥90 | 1,400 | (3.4%) | 28.0% | (25.7-30.4) | 50.1% | (47.5-52.8) |
| Admission type | ||||||
| Routine | 12,754 | (30.7%) | 11.3% | (10.7-11.8) | 22.6% | (21.9-23.4) |
| Emergency | 28,791 | (69.3%) | 16.9% | (16.4-17.3) | 29.5% | (29.0-30.1) |
| SIMD 2012a | ||||||
| 1 (most deprived) | 3,317 | (8.0%) | 15.2% | (14.0-16.5) | 28.7% | (27.2-30.3) |
| 2 | 6,279 | (15.1%) | 16.3% | (15.4-17.2) | 29.2% | (28.1-30.4) |
| 3 | 9,886 | (23.8%) | 15.8% | (15.1-16.5) | 28.7% | (27.8-29.6) |
| 4 | 10,792 | (26.0%) | 15.0% | (14.3-15.7) | 26.6% | (25.8-27.5) |
| 5 (least deprived) | 10,957 | (26.4%) | 14.3% | (13.6-14.9) | 26.0% | (25.2-26.9) |
| Urban Rurala | ||||||
| Large urban | 15,577 | (37.5%) | 15.8% | (15.2-16.3) | 28.8% | (28.1-29.5) |
| Other urban | 6,329 | (15.2%) | 16.1% | (15.2-17.0) | 29.1% | (28.0-30.2) |
| Accessible small town | 3,329 | (8.0%) | 16.6% | (15.3-17.9) | 27.8% | (26.3-29.3) |
| Remote small town | 3,719 | (9.0%) | 15.5% | (14.4-16.7) | 28.3% | (26.9-29.8) |
| Accessible rural | 7,484 | (18.0%) | 14.7% | (13.9-15.5) | 26.7% | (25.7-27.7) |
| Remote rural | 4,531 | (10.9%) | 12.0% | (11.1-13.0) | 22.0% | (20.9-23.3) |
| Admitted in previous 5 years | ||||||
| Yes | 26,780 | (64.5%) | ||||
| No | 14,765 | (35.5%) | ||||
| Number of Charlson conditions | ||||||
| 0 | 27,560 | (66.3%) | - | - | - | - |
| 1 | 7,697 | (18.5%) | - | - | - | - |
| 2 | 3,867 | (9.3%) | - | - | - | - |
| 3 | 1,578 | (3.8%) | - | - | - | - |
| 4 | 578 | (1.4%) | - | - | - | - |
| 5 | 195 | (0.5%) | - | - | - | - |
| 6 | 61 | (0.1%) | - | - | - | - |
| 7 | 9 | (0.0%) | - | - | - | - |
| Number of Tonelli conditions | ||||||
| 0 | 22,884 | (55.1%) | - | - | - | - |
| 1 | 7,272 | (17.5%) | - | - | - | - |
| 2 | 5,173 | (12.5%) | - | - | - | - |
| 3 | 3,241 | (7.8%) | - | - | - | - |
| 4 | 1,665 | (4.0%) | - | - | - | - |
| 5 | 783 | (1.9%) | - | - | - | - |
| 6 | 357 | (0.9%) | - | - | - | - |
| 7 | 100 | (0.2%) | - | - | - | - |
| 8 | 56 | (0.1%) | - | - | - | - |
| 9 | 9 | (0.0%) | - | - | - | - |
| 10+ | 5 | (0.0%) | - | - | - | - |
| Length of stay, days (median, IQR) | 2 | (1-6) | 3 | (1-8) | 3 | (1-8) |
| Readmission within 1 year of discharge, n (%) | 18,318 | (44.1%) | 3,976 | (63.2%) | 6,861 | (60.2%) |
| Died within 1 year of index date, n (%) | 4,619 | (11.1%) | 1,860 | (29.6%) | 2,431 | (21.3%) |