Variables | All (N = 6317) | CDC employees (n = 2313) | PHI workers (n = 4004) | p value |
---|---|---|---|---|
Socio-demographic characteristics | ||||
 Sex (male)c | 2238 (35.4) | 987 (42.7) | 1251 (31.2) | <0.001 |
 Age groups (years)d |  |  |  | 0.004 |
  <29 | 1244 (19.7) | 392 (16.9) | 852 (21.3) |  |
  30–39 | 2093 (33.1) | 819 (35.4) | 1274 (31.8) |  |
  40–49 | 2132 (33.8) | 748 (32.3) | 1384 (34.6) |  |
  >50 | 848 (13.4) | 354 (15.3) | 494 (12.3) |  |
 Having children younger than 6 years (yes)c | 1765 (27.9) | 677 (29.3) | 1088 (27.2) | 0.074 |
 Job titlec |  |  |  | <0.001 |
 Junior | 2880 (45.6) | 745 (32.2) | 2135 (53.3) |  |
 Intermediate | 1984 (31.4) | 800 (34.6) | 1184 (29.6) |  |
  Senior | 712 (11.3) | 504 (21.8) | 208 (5.2) |  |
  Others (e.g., volunteers) | 741 (11.7) | 264 (11.4) | 477 (11.9) |  |
COVID-19 control and prevention work related variables | ||||
 Outbreak severity (by province)a, d |  |  |  | <0.001 |
  Low | 591 (9.4) | 477 (20.6) | 114 (2.8) |  |
  Medium | 3638 (57.6) | 1224 (52.9) | 2414 (60.3) |  |
  High | 830 (13.1) | 282 (12.2) | 548 (13.7) |  |
  Very high | 1258 (19.9) | 330 (14.3) | 928 (23.2) |  |
 Work contentc |  |  |  | <0.001 |
  Involved in field work | 1556 (24.6) | 352 (15.2) | 1204 (30.1) |  |
  Involved in non-field work | 235 (3.7) | 149 (6.2) | 86 (2.1) |  |
  Involved in both field and non-field work | 4526 (71.6) | 1812 (78.3) | 2714 (67.8) |  |
 Duration of training on COVID-19d |  |  |  | <0.001 |
  None | 180 (2.8) | 113 (4.9) | 67 (1.7) |  |
  1–4 hours | 1128 (17.9) | 411 (17.8) | 717 (17.9) |  |
  5–8 hours | 876 (13.9) | 339 (14.7) | 537 (13.4) |  |
  9–16 hours | 939 (14.9) | 350 (15.1) | 589 (14.7) |  |
  >16 hours | 3194 (50.6) | 1100 (47.6) | 2094 (52.3) |  |
 Level of knowledge of COVID-19 prevention and controld |  |  |  | <0.001 |
  Adequate | 975 (15.4) | 275 (11.9) | 700 (17.5) |  |
  Relatively adequate | 3700 (58.6) | 1397 (60.4) | 2303 (57.5) |  |
  Average | 1537 (24.3) | 580 (25.1) | 957 (23.9) |  |
  Inadequate/very inadequate | 105 (1.7) | 61 (2.6) | 44 (1.1) |  |
 Start time of COVID-19 prevention and control work (after 23 January 2020)c | 3613 (60.0) | 1098 (50.1) | 2515 (65.6) | <0.001 |
Efforts and sacrifices during the outbreak | ||||
 Number of days worked all nightd |  |  |  | <0.001 |
  0 | 3617 (57.3) | 1073 (46.4) | 2544 (63.5) |  |
  1–3 days | 1459 (23.1) | 621 (26.8) | 838 (20.9) |  |
  >3 days | 1241 (19.6) | 619 (26.8) | 622 (15.5) |  |
 Worked throughout Chinese New Year (yes)c | 2862 (45.3) | 1313 (56.8) | 1549 (38.7) | <0.001 |
 To avoid infecting family members, chose not to live at home (yes)c | 878 (13.9) | 305 (13.2) | 573 (14.3) | 0.213 |
 To avoid infecting family members, sent children to parents’ homes (yes)c | 935 (14.8) | 338 (14.6) | 597 (14.9) | 0.749 |
Perceptions | ||||
 Worried about being infected at workd |  |  |  | <0.001 |
  None/mild | 2461 (39.0) | 1023 (44.2) | 1438 (35.9) |  |
  Medium | 2264 (35.8) | 795 (34.4) | 1469 (36.7) |  |
  Very worried | 1592 (25.2) | 495 (21.4) | 1097 (27.4) |  |
 Perceived ability to maintain current work intensity for ≥1 monthd | 2315 (36.6) | 750 (32.4) | 1565 (39.1) | <0.001 |
 Perceived support from colleaguesd |  |  |  | 0.098 |
  None/low | 383 (6.1) | 143 (6.2) | 240 (6.0) |  |
  Medium | 2448 (38.8) | 858 (37.1) | 1590 (39.7) |  |
  High/very high | 3486 (55.2) | 1312 (56.7) | 2174 (54.3) |  |
 Perceived support from familyd |  |  |  | <0.001 |
  None/low | 122 (1.9) | 48 (2.1) | 74 (1.8) |  |
  Medium | 1334 (21.1) | 410 (17.7) | 924 (23.1) |  |
  High/very high | 4861 (77.0) | 1855 (80.2) | 3006 (75.1) |  |
 Perceived support from societyd |  |  |  | 0.014 |
  None/low | 757 (12.0) | 323 (14.0) | 434 (10.8) |  |
  Medium | 2779 (44.0) | 999 (43.2) | 1780 (44.5) |  |
  High/very high | 2781 (44.0) | 991 (42.8) | 1790 (44.7) |  |
Total score of perceived supportb | 10.99 ± 1.95 | 11.02 ± 1.91 | 10.98 ± 1.97 | 0.360 |
Perceived troubles at work | ||||
 Your work was not understoodd |  |  |  | 0.002 |
  None/rare | 2671 (42.3) | 918 (39.7) | 1753 (43.8) |  |
  Sometimes | 2490 (39.4) | 945 (40.9) | 1545 (38.6) |  |
  Much/very much | 1156 (18.3) | 450 (19.5) | 706 (17.6) |  |
 You have been treated unfairly at workd |  |  |  | <0.001 |
  None/rare | 3471 (54.9) | 1191 (51.5) | 2280 (56.9) |  |
  Sometimes | 1997 (31.6) | 753 (32.5) | 1244 (31.1) |  |
  Much/very much | 849 (13.4) | 369 (16.0) | 480 (12.0) |  |
 You felt wronged at workd |  |  |  | <0.001 |
  None/rare | 3022 (47.8) | 1030 (44.5) | 1992 (49.8) |  |
 Sometimes | 2245 (35.5) | 848 (36.7) | 1397 (34.9) |  |
  Much/very much | 1050 (16.6) | 435 (18.8) | 615 (15.4) |  |
 Your family cannot understand your effortsd |  |  |  | 0.326 |
  None/rare | 4976 (78.8) | 1837 (79.4) | 3139 (78.4) |  |
  Sometimes | 1076 (17.0) | 384 (16.6) | 692 (17.3) |  |
  Much/very much | 265 (4.2) | 92 (4.0) | 173 (4.3) |  |
 You worried about routine works besides the COVID-19 epidemicd |  |  |  | <0.001 |
  None/rare | 2730 (43.2) | 1085 (46.9) | 1645 (41.1) |  |
  Sometimes | 2527 (40.0) | 869 (37.6) | 1658 (41.4) |  |
  Much/very much | 1060 (16.8) | 359 (15.5) | 701 (17.5) |  |
Total score of perceived troubles at work | 12.25 ± 3.74 | 12.39 ± 3.82 | 12.17 ± 3.69 | 0.023 |
Mental health status and self-perceived health | ||||
 PHQ-9b | 5.94 ± 5.59 |  |  |  |
 Depression (yes)c | 1034 (21.3) | 521 (27.1) | 513 (17.5) | <0.001 |
 GAD-7b | 5.69 ± 5.07 |  |  |  |
 Anxiety (yes)c | 920 (19.0) | 396 (20.6) | 524 (17.9) | <0.001 |
 Self-perceived healthd |  |  |  | <0.001 |
  Very good | 974 (15.4) | 199 (8.6) | 775 (19.4) |  |
  Good | 2504 (39.6) | 841 (36.4) | 1663 (41.5) |  |
  Average | 2221 (35.2) | 926 (40.0) | 1295 (32.3) |  |
  Poor | 555 (8.8) | 303 (13.1) | 252 (6.3) |  |
  Very poor | 63 (1.0) | 44 (1.9) | 19 (0.5) |  |