Table 1.
Baseline demographic and clinical characteristics stratified by reference standard delirium status
| Total (N = 785) | Delirium present (N = 95) | Delirium absent (N = 690) | p value | |
|---|---|---|---|---|
| Age (years) | ||||
| Mean (SD) | 81.4 (6.4) | 83.5 (6.9) | 81.1 (6.3) | 0.0007 |
| Median [Q1–Q3] | 81.0 [77.0–86.0] | 84.0 [78.0–89.0] | 81.0 [77.0–86.0] | |
| Gender | ||||
| Male, n (%) | 349 (44.5%) | 34 (35.8%) | 315 (45.7%) | 0.0697 |
| Female, n (%) | 436 (55.5%) | 61 (64.2%) | 375 (54.3%) | |
| Dementia diagnosis and/or IQCODE ≥ 3.44 | ||||
| Yes, n (%) | 111 (14.2%) | 43 (45.3%) | 68 (9.9%) | < 0.0001 |
| No, n (%) | 673 (85.5%) | 52 (54.7%) | 621 (90.1%) | |
| Missing*, n (%) | 1 (0.1%) | 0 (0.0%) | 1 (0.1%) | |
| Location of first assessment | ||||
| Emergency department, n (%) | 53 (6.8%) | 10 (10.5%) | 43 (6.2%) | 0.2624 |
| Acute general medical ward, n (%) | 665 (84.7%) | 76 (80.0%) | 589 (85.4%) | |
| Hospital ward, n (%) | 67 (8.5%) | 9 (9.5%) | 58 (8.4%) | |
p value from chi-squared (categorical variables) or t test (continuous)
IQCODE Informant Questionnaire for Cognitive Impairment in the Elderly
*Missing category not included in chi-squared test