Table 3. The association between medical history and long COVID-19.
(n = 990).
| Category | No long COVID-19 | Long COVID-19 | Chi-Square Value | P-value |
|---|---|---|---|---|
| Vitamin C | 0.185 | 0.667 | ||
| No | 379(72.1) | 147(27.9) | ||
| Yes | 340(73.3) | 124(26.7) | ||
| Zinc | 1.205 | 0.272 | ||
| No | 501(73.7) | 179(26.3) | ||
| Yes | 218(70.3) | 92(29.7) | ||
| Vitamin B12 | 1.568 | 0.211 | ||
| No | 507(71.5) | 202(28.5) | ||
| Yes | 212(75.4) | 69(24.6) | ||
| Vitamin D | 14.545 | <0.001 | ||
| No | 417(68.4) | 193(31.6) | ||
| Yes | 302(79.5) | 78(20.5) | ||
| Chronic illness | 10.114 | 0.006 | ||
| None | 399(76.7) | 121(23.2) | ||
| 1–2 | 272(67.3) | 132(32.7) | ||
| >2 | 48(72.7) | 18(27.3) | ||
| Number of COVID-19 infections | 8.617 | 0.013 | ||
| 1 | 447(75.6) | 154(24.4) | ||
| 2 | 198(68.5) | 91(31.5) | ||
| 3 | 44(62.9) | 26(37.1) | ||
| Hospitalization | 1.626 | 0.235 | ||
| No | 679(73.1) | 250(26.9) | ||
| Yes | 40(65.6) | 21(34.4) | ||
| Number of Symptoms | 33.188 | <0.001 | ||
| 1–3 | 265(83.1) | 54(16.9) | ||
| 4–6 | 111(76.6) | 34(23.4) | ||
| More than 6 | 343(65.2) | 183(34.8) |
n: number of participants