Table I.
Patient baseline characteristics according to delirium status ascertained on admission for patients admitted from home. Univariable analyses were used to assess the difference between those with and without delirium for each variable. Delirium = 4 AT ≥ 4.
| Variable | Whole cohort (n = 1,340) | Delirium (n = 189) | No delirium (n = 1,151) | p-value |
|---|---|---|---|---|
| Mean age, yrs (SD) | 79.5 (10.3) | 82.9 (8.9) | 79.0 (10.4) | < 0.001* |
| Age (yrs), n | < 0.001† | |||
| 50 to 59 | 69 | 7 | 62 | |
| 60 to 69 | 154 | 7 | 147 | |
| 70 to 79 | 356 | 36 | 320 | |
| 80 to 89 | 553 | 98 | 455 | |
| 90+ | 208 | 41 | 167 | |
| Female sex, n (%) | 968 (72.2) | 129 (68.3) | 839 (72.9) | 0.218† |
| SIMD quintile, n (%) | 0.078† | |||
| 1 (most deprived) | 168 (12.6) | 15 (7.9) | 153 (13.4) | |
| 2 | 297 (22.3) | 52 (27.5) | 245 (21.4) | |
| 3 | 221 (16.6) | 31 (16.4) | 190 (16.6) | |
| 4 | 236 (17.7) | 39 (20.6) | 197 (17.2) | |
| 5 (least deprived) | 412 (30.9) | 52 (27.5) | 360 (31.4) | |
| ASA grade, n (%) | < 0.001† | |||
| 1 (healthy) | 38 (2.8) | 1 (0.5) | 37 (3.2) | |
| 2 | 413 (30.8) | 22 (11.6) | 391 (34.0) | |
| 3 | 789 (58.9) | 136 (72.0) | 653 (56.7) | |
| 4 | 88 (6.6) | 23 (12.2) | 65 (5.6) | |
| 5 (moribund) | 12 (0.9) | 7 (3.7) | 5 (0.4) | |
| COVID-19 positive (< 30 days), n (%) | 53 (4.0) | 10 (5.3) | 43 (3.7) | 0.415† |
*
Independent-samples t-test
†
Chi-squared test
ASA, American Society of Anesthesiologists; SD, standard deviation; SIMD, Scottish Index of Multiple Deprivation.