Baseline characteristics
| All patients (n=148) | Delirium (n=108) | No delirium (n=40) | Absolute standardised difference | |
| Age, years (IQR) | 59 (49–71) | 58 (47–71) | 62 (54–71) | 0.26 |
| Male sex, n (%) | 98 (66) | 32 (30) | 18 (45) | 0.32 |
| Race, n (%) | 0.32 | |||
| Caucasian | 66 (45) | 47 (44) | 19 (48) | |
| African American | 70 (47) | 54 (50) | 16 (40) | |
| Other | 1 (0.7) | 1 (0.9) | 0 (0) | |
| Not reported | 11 (7.4) | 6 (5.6) | 5 (13) | |
| Ethnicity, n (%) | 0.31 | |||
| Non-Hispanic | 137 (93) | 100 (93) | 38 (93) | |
| Hispanic | 5 (3.4) | 5 (4.7) | 0 (0) | |
| Unknown/not reported | 6 (4.1) | 3 (2.8) | 3 (7.5) | |
| Weight, kg (IQR) | 103 (83–127) | 105 (87–127) | 93 (79–113) | 0.36 |
| BMI, kg/m2 (IQR) | 34 (28–40) | 34 (29–41) | 31 (28–39) | 0.16 |
| Comorbidities, n (%) | ||||
| Asthma | 24 (16) | 17 (16) | 7 (18) | 0.05 |
| Atrial fibrillation | 22 (15) | 14 (13) | 8 (20) | 0.19 |
| Cancer | 25 (17) | 20 (19) | 5 (13) | 0.17 |
| Chronic kidney disease | 40 (27) | 30 (28) | 10 (25) | 0.06 |
| Congestive heart failure | 19 (13) | 13 (12) | 6 (15) | 0.09 |
| COPD | 14 (9.5) | 8 (7.4) | 6 (15) | 0.24 |
| Coronary artery disease | 27 (18) | 18 (17) | 9 (23) | 0.15 |
| Depression | 17 (11) | 11 (10) | 6 (15) | 0.15 |
| Diabetes mellitus | 75 (51) | 58 (54) | 18 (43) | 0.23 |
| Hypertension | 102 (69) | 74 (66) | 29 (70) | 0.03 |
| Obstructive sleep apnoea | 31 (21) | 22 (20) | 9 (23) | 0.05 |
| Seizures | 8 (5.4) | 5 (4.6) | 3 (7.5) | 0.12 |
| Stroke | 9 (6.1) | 5 (4.6) | 4 (10) | 0.21 |
| Substance use disorders | 9 (6.1) | 6 (5.6) | 3 (7.5) | 0.21 |
| TIA | 5 (3.4) | 3 (2.8) | 2 (5) | 0.12 |
Median (IQR) data presented.
BMI, body mass index; COPD, chronic obstructive pulmonary disease; TIA, transient ischaemic attack.