Symptoms at ED presentation
| Delirium (N=123) | No delirium (N=703) | P value | Corrected P value* | |
| Delirium symptoms in the ED, n (%) | ||||
| Alterations of consciousness | 60 (48.8%) | 0 (0%) | <0.001 | <0.001 |
| Disorientation | 38 (31.4%) | 0 (0%) | <0.001 | <0.001 |
| Inattention | 8 (6.6%) | 0 (0%) | <0.001 | <0.001 |
| Confusion | 40 (33.1%) | 0 (0%) | <0.001 | <0.001 |
| Lethargy | 36 (29.5%) | 0 (0%) | <0.001 | <0.001 |
| Agitation | 51 (41.8%) | 0 (0%) | <0.001 | <0.001 |
| Hallucinations | 1 (0.8%) | 0 (0%) | 0.02 | 0.01 |
| Aggressiveness | 5 (4.1%) | 0 (0%) | <0.001 | <0.001 |
| Disorganised thinking | 3 (2.5%) | 0 (0%) | <0.001 | <0.001 |
| Memory deficit | 8 (6.6%) | 0 (0%) | <0.001 | <0.001 |
| COVID-19 symptoms in the ED, n (%) | ||||
| Dysgeusia | 10 (8.1%) | 191 (27.4%) | <0.001 | <0.001 |
| Anosmia | 12 (9.8%) | 149 (21.3%) | 0.003 | <0.001 |
| Fever | 80 (65%) | 612 (87.7%) | <0.001 | <0.001 |
| Cough | 36 (29.3%) | 415 (59.4%) | <0.001 | <0.001 |
| Rhinorrhea | 7 (5.7%) | 65 (9.3%) | 0.19 | 0.07 |
| Pharyngodynia | 5 (4.1%) | 81 (11.6%) | 0.01 | <0.001 |
| Earache | 3 (2.4%) | 28 (4%) | 0.4 | 0.14 |
| Chest pain | 8 (6.5%) | 108 (15.5%) | 0.01 | <0.001 |
| Myalgia | 9 (7.3%) | 154 (22%) | <0.001 | <0.001 |
| Arthralgia | 9 (7.3%) | 107 (15.3%) | 0.02 | 0.01 |
| Asthenia | 22 (17.9%) | 276 (39.5%) | <0.001 | <0.001 |
| Dyspnoea | 75 (61%) | 392 (56.1%) | 0.31 | 0.11 |
| Syncope | 20 (16.3%) | 34 (4.9%) | < 0.001 | < 0.001 |
| Headache | 4 (3.3%) | 111 (15.9%) | <0.001 | <0.001 |
| Confusion | 40 (32.5%) | 84 (12%) | <0.001 | <0.001 |
| Abdominal pain | 8 (6.5%) | 53 (7.6%) | 0.67 | 0.21 |
| Nausea/vomiting | 10 (8.1%) | 91 (13%) | 0.13 | 0.05 |
| Diarrhoea | 11 (8.9%) | 131 (18.8%) | 0.008 | <0.001 |
| Conjunctivitis | 7 (5.7%) | 55 (7.9%) | 0.4 | 0.14 |
| Skin rash | 2 (1.6%) | 22 (3.1%) | 0.35 | 0.13 |
| Number of COVID-19 symptoms at ED admission, median (IQR) | 2 (IQR 1.75–3) | 3 (IQR 2–6) | <0.001 | 0.008 |
| Duration of COVID-19 symptoms before ED admission (days), median (IQR) | 4 (IQR 1–7) | 7 (IQR 4–10) | <0.001 | 0.006 |
*Benjamini-Hochberg correction. Benjamini-Hochberg corrected p values were calculated by computing p(k)=m/k for all sorted p values (p=sorted p values; m=total number of sorted p values; k=corresponding rank). Then p values were adjusted from the bigger to the smallest. If the value p(k)=m/k was bigger than the previous adjusted p value, the corresponding corrected p value was equal to the previous one since numbers should not increase.
n, number.