Table 1 Participants’ characteristics.
|  | Total | Early waves of COVID-19 n = 6010 | Later waves of COVID-19 n = 5344 |  | p | |||
|---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | |||
Sex | ||||||||
 Male | 6172 | 54.36 | 3437 | 57.19 | 2735 | 51.18 | χ2 = 43.30 | < 0.001 |
 Female | 5150 | 45.36 | 2553 | 42.48 | 2597 | 48.60 |  |  |
 Others | 32 | 0.28 | 20 | 0.33 | 12 | 0.22 |  |  |
Age group (in years) | ||||||||
 20–29 | 1815 | 15.99 | 1192 | 19.83 | 623 | 11.66 | χ2 = 151.92 | < 0.001 |
 30–39 | 2928 | 25.79 | 1503 | 25.01 | 1425 | 26.67 |  |  |
 40–49 | 3191 | 28.10 | 1580 | 26.29 | 1611 | 30.15 |  |  |
 50–59 | 2294 | 20.20 | 1187 | 19.75 | 1107 | 20.71 |  |  |
 60–69 | 910 | 8.01 | 435 | 7.24 | 475 | 8.89 |  |  |
 70–79 | 198 | 1.74 | 101 | 1.68 | 97 | 1.82 |  |  |
 80–89 | 13 | 0.11 | 7 | 0.12 | 6 | 0.11 |  |  |
 ≥ 90 | 5 | 0.04 | 5 | 0.08 | 0 | 0 |  |  |
Level of education | ||||||||
 High school graduates or less | 2468 | 21.74 | 1356 | 22.56 | 1112 | 20.81 | χ2 = 5.12 | 0.02 |
Post-high school graduate | 8886 | 78.26 | 4654 | 77.44 | 4232 | 79.19 | Â | Â |
Job status | ||||||||
 Employed | 9726 | 85.66 | 5151 | 85.71 | 4575 | 85.61 | χ2 = 0.02 | 0.88 |
 Unemployed | 1628 | 14.34 | 859 | 14.29 | 769 | 14.39 |  |  |
Cohabitation status | ||||||||
 Living together | 9490 | 83.58 | 4847 | 80.65 | 4643 | 86.88 | χ2 = 80.10 | < 0.001 |
 Living alone | 1864 | 16.42 | 1163 | 19.35 | 701 | 13.12 |  |  |
Hospitalization status at infection | ||||||||
 Hospitalized | 1579 | 13.91 | 1468 | 24.43 | 111 | 2.08 | χ2 = 1200.0 | < 0.001 |
 Not hospitalized | 9775 | 86.09 | 4542 | 75.57 | 5233 | 97.92 |  |  |
Duration after infection (months) | 3.88 | ± 0.04 | 4.99 | ± 0.06 | 2.62 | ± 0.03 | t = 35.82 | < 0.001 |
K6 score | 3.54 | ± 0.05 | 4.54 | ± 0.07 | 2.42 | ± 0.06 | t = 23.43 | < 0.001 |
 ≥ 5 | 3474 | 30.60 | 2375 | 39.52 | 1099 | 20.57 | χ2 = 478.48 | < 0.001 |
 ≥ 13 | 765 | 6.74 | 548 | 9.12 | 217 | 4.06 | χ2 = 115.55 | < 0.001 |
Experiences of discrimination | ||||||||
 Being blamed | 641 | 5.65 | 548 | 9.12 | 93 | 1.74 | χ2 = 289.06 | < 0.001 |
 Some form of discrimination | 1820 | 16.03 | 1538 | 25.59 | 282 | 5.28 | χ2 = 867.21 | < 0.001 |
 Participant or families being maligned | 1206 | 10.62 | 1038 | 17.27 | 168 | 3.14 | χ2 = 594.69 | < 0.001 |