Table 1.
Pooled prevalence of headache in COVID-19 patients from different regions.
| Regions | Headache prevalence [95% CI] (%) | Number of studies analyzed | Total number of COVID-19 patients | Heterogeneity | Publication bias, Egger's test (p-value) | ||
|---|---|---|---|---|---|---|---|
| I2 | p-value | ||||||
| Overall | 10.1 [8.76–11.49] | 86 | 14,275 | 88% | <0.0001 | 0.40 | |
| China | 10.1 [8.78–11.54] | 85 | 14,115 | 88% | <0.0001 | 0.38 | |
| China provinces/municipalities | Hubei | 9.5 [7.73–11.39] | 48 | 6,578 | 88% | <0.0001 | 0.87 |
| Shanghai | 11.0 [9.13–12.99] | 6 | 1,013 | 0% | 0.77 | NA | |
| Zhejiang | 9.3 [7.56–11.07] | 5 | 2,553 | 52% | 0.08 | NA | |
| Beijing | 10.1 [3.69–16.55] | 5 | 217 | 60% | 0.03 | NA | |
| Chongqing | 16.1 [8.01–24.21] | 4 | 299 | 72% | 0.01 | NA | |
| Guangdong | 9.6 [0.00–19.53] | 3 | 380 | 85% | 0.004 | NA | |
| Anhui | 3.1 [0.00–12.55] | 2 | 51 | 51% | 0.22 | NA | |
| Hunan | 5.1 [0.32–9.91] | 2 | 197 | 42% | 0.19 | NA | |
| Shandong | 14.0 [1.64–26.37] | 2 | 90 | 68% | 0.07 | NA | |
| Jiangsu | 5.4 [2.44–8.42] | 1 | 221 | NA | NA | NA | |
| Sichuan | 7.6 [0.45–14.93] | 1 | 52 | NA | NA | NA | |
| Hebei | 8.1 [0.00–16.90] | 1 | 37 | NA | NA | NA | |
| Hainan | 9.8 [1.64–17.97] | 1 | 51 | NA | NA | NA | |
| USA | 8.3 [0.0–19.39] | 1 | 24 | NA | NA | NA | |