Table 1.
Baseline Characteristics of 266 Patients Assigned a First-time ICD-10 Diagnosis Code for Long-COVID, in the North Denmark Region from February 27, 2020 Through June 30, 2021
| Characteristic | n (%) or Median (IQR) |
|---|---|
| Sex | |
| Females | 175 (66) |
| Males | 91 (34) |
| Department of long-COVID diagnosis | |
| Long-COVID clinic (Aalborg University Hospital) | 232 (87) |
| Internal medicine department | 27 (10) |
| Pediatric department | 5 (2) |
| Neurological department | 2 (1) |
| Age, years | 51 (43–60) |
| Age group, years | |
| 0–17 | 5 (2) |
| 18–40 | 51 (19) |
| 41–60 | 152 (57) |
| 61–80 | 49 (19) |
| 81– | 9 (3) |
| Admission to hospital during acute COVID-19 | |
| Yes | 81 (30) |
| No | 185 (70) |
| Admission to ICU during acute COVID-19 | |
| Yes | 32 (12) |
| No | 234 (88) |
| Duration of symptoms, days | 148 (91–186) |
| Symptoms | |
| Constitutional | 211 (79) |
| Headache | 93 (35) |
| Fatigue | 180 (68) |
| Attention/concentration difficulties | 119 (45) |
| Fever | 6 (2) |
| Dizziness | 17 (6) |
| Insomnia | 28 (11) |
| Organ specific symptoms | |
| Pulmonary | 168 (63) |
| ENT | 99 (37) |
| Musculoskeletal | 49 (18) |
| Cardiac | 34 (13) |
| Neurological | 16 (8) |
| Gastrointestinal | 18 (7) |
| Urogenital | 1 (0.4) |
| Skin | 2 (0.8) |
Abbreviations: COVID-19, coronavirus disease 2019; ENT, ear-nose-throat.