Evaluation of patient characteristics that were associated with chronic daily headache (CDH)
| Characteristics | With CDH (n = 25) |
Without CDH (n = 98) |
RR (95% CI) | Adjusted risk RR (95% CI) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sex | Female Male |
20 (80) 5 (20) |
49 (50) 49 (50) |
1.28 (1.08–1.52) | 0.007 | ||||||||||
| Age (yr) | 51 (44;59.5) | 50 (42;58) | 0.868 | ||||||||||||
| Needed to be hospitalized during acute phase of COVID-19 | Yes No |
20 (80) 5 (20) |
75 (77) 23 (23) |
1.04 (0.85–1.27) | 0.712 | ||||||||||
| Symptoms in the acute fase (first interview) | |||||||||||||||
| Fever | Yes No |
18 (72) 7 (28) |
83 (85) 15 (15) |
0.83 (0.62–1.12) | 0.139 | ||||||||||
| Cough | Yes No |
19 (76) 6 (24) |
67 (68) 31 (32) |
1.08 (0.90–1.29) | 0.458 | ||||||||||
| Difficulty in breathing (dyspnoea) | Yes No |
21 (84) 4 (16) |
77 (79) 21 (21) |
1.07 (0.88–1.31) | 0.547 | ||||||||||
| Drop in oxygen saturation | Yes No |
15 (60) 10 (40) |
55 (56) 43 (44) |
1.03 (0.86–1.23) | 0.727 | ||||||||||
| Cyanosis | Yes No |
2 (8) 23 (92) |
7 (7) 91 (93) |
1.03 (0.72–1.47) | 0.883 | ||||||||||
| Hyposmia/Anosmia | Yes No |
21 (84) 4 (16) |
72 (73) 26 (27) |
1.12 (0.94–1.34) | 0.274 | ||||||||||
| Hypogeusia/Ageusia | Yes No |
21 (84) 4 (16) |
78 (80) 20 (20) |
1.06 (0.86–1.30) | 0.620 | ||||||||||
| Myalgia | Yes No |
17 (68) 8 (32) |
51 (52) 47 (48) |
1.14 (0.96–1.36) | 0.152 | ||||||||||
| Headache intensity | 8 (8.5;10) | 7 (5;9.5) | 1.3 (1.1–1.5) | 0.007 | 1.3 (1.1–1.5) | 0.005 | |||||||||
| Migraine-like headache (ID-Migraine) | Yes No |
18 (72) 7 (28) |
46 (47) 52 (53) |
0.82 (0.68–0.98) | 0.025 | ||||||||||
| Previous headache | Yes No |
18 (72) 7 (28) |
45 (46) 53 (54) |
1.24 (1.03–1.48) | 0.020 | 2.3 (1.0–5.0) | 0.045 | ||||||||
Values are presented as number (%) or median (P25;P75).
RR: relative risk, CI: confidence interval, P25: 25th percentile, P75: 75th percentile.