Table 2.
Population characteristics by categories of risk exposure.
| N | Hospital site |
Hospital ward/unit type |
HCW category |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Low risk n = 3729 | High risk n = 997 | Low risk n = 3426 | Medium risk n = 317 | High risk n = 983 | Low risk n = 1108 | Medium risk n = 445 | High risk n = 3173 | ||
| Age group | |||||||||
| 16–40 | 2191 (46.4) | 1710 (45.9) | 481 (48.2) | 1453 (42.4) | 174 (54.9) | 564 (57.4) | 434 (39.2) | 121 (27.2) | 1636 (51.6) |
| 41–50 | 1289 (27.3) | 1015 (27.2) | 274 (27.5) | 970 (28.3) | 77 (24.3) | 242 (24.6) | 299 (27.0) | 145 (32.6) | 845 (26.6) |
| >51 | 1244(26.3) | 1002 (26.9) | 242 (24.3) | 1001 (29.2) | 66 (20.8) | 177 (18.0) | 375 (33.8) | 179 (40.2) | 690 (21.8) |
| missing | 2 (<0.1) | ||||||||
| Gender | |||||||||
| Men | 1496 (31.7) | 1133 (30.4) | 363 (36.4) | 1048 (30.6) | 128 (40.4) | 320 (32.6) | 304 (27.4) | 111 (24.9) | 1081 (34.1) |
| Women | 3229 (68.3) | 2595 (69.6) | 634 (63.6) | 2377 (69.4) | 189 (59.6) | 663 (67.4) | 804 (72.6) | 334 (75.1) | 2091 (65.9) |
| missing | 1 (<0.1) | ||||||||
| BMI (kg/m2) | |||||||||
| <25 | 3116 (65.9) | 2454 (67.4) | 662 (68.1) | 2217 (66.5) | 219 (69.5) | 680 (70.5) | 745 (69.2) | 237 (55.2) | 2134 (68.7) |
| 25–29.9 | 1121 (23.7) | 889 (24.4) | 232 (23.9) | 824 (24.7) | 82 (26.0) | 215 (22.3) | 233 (21.6) | 125 (29.1) | 763 (24.5) |
| ≥30 | 377 (8.0) | 299 (8.2) | 78 (8.0) | 293 (8.8) | 14 (4.4) | 70 (7.3) | 99 (9.2) | 67 (15.6) | 211 (6.8) |
| missing | 112 (2.4) | ||||||||
| Chronic disease | |||||||||
| Diabetes | 57 (1.2) | 43 (1.2) | 14 (1.4) | 48 (1.4) | 6 (1.9) | 3 (0.3) | 8 (0.7) | 11 (2.5) | 38 (1.2) |
| Hypertension | 266 (5.7) | 210 (5.7) | 56 (5.6) | 218 (6.4) | 18 (5.7) | 30 (3.1) | 69 (6.3) | 33 (7.6) | 164 (5.2) |
| Heart disease | 57 (1.2) | 46 (1.2) | 11 (1.1) | 45 (1.3) | 3 (1.0) | 9 (0.9) | 14 (1.3) | 10 (2.3) | 33 (1.0) |
| Lung disease | 137 (2.9) | 116 (3.1) | 21 (2.1) | 103 (3.0) | 10 (3.2) | 24 (2.5) | 21 (1.9) | 17 (3.9) | 99 (3.1) |
| Renal disease | 17 (0.4) | 7 (0.2) | 10 (1.0) | 11 (0.3) | 1 (0.3) | 5 (0.5) | 5 (0.5) | 2 (0.5) | 10 (0.3) |
| Cancer | 38 (0.8) | 30 (0.8) | 8 (0.8) | 31 (0.9) | 4 (1.3) | 3 (0.3) | 14 (1.3) | 5 (1.1) | 19 (0.6) |
| Immunosuppressive therapies | |||||||||
| No | 4696 (99.4) | 3710 (99.5) | 986 (98.9) | 3401 (99.3) | 316 (99.7) | 979 (99.6) | 1103 (99.5) | 441 (99.1) | 3152 (99.3) |
| Yes | 30 (0.6) | 19 (0.5) | 11 (1.1) | 25 (0.7) | 1 (0.3) | 4 (0.4) | 5 (0.5) | 4 (0.9) | 21 (0.7) |
| Smoking | |||||||||
| Non-smoker/Ex-smoker | 3572 (75.6) | 2821 (75.7) | 751 (75.3) | 2630 (76.8) | 240 (75.7) | 702 (71.4) | 842 (76.0) | 309 (69.4) | 2421 (76.3) |
| Current smoker | 1154 (24.4) | 908 (24.3) | 246 (24.7) | 796 (23.2) | 77 (24.3) | 281 (28.6) | 266 (24.0) | 136 (30.6) | 752 (23.7) |
| Flu vaccination | |||||||||
| No | 2543 (53.8) | 2027 (54.4) | 516 (51.8) | 1936 (56.5) | 135 (42.6) | 472 (48) | 767 (69.2) | 281 (63.1) | 1495 (47.1) |
| Yes | 2183 (46.2) | 1702 (45.6) | 481 (48.2) | 1490 (43.5) | 182 (57.4) | 511 (52) | 341 (30.8) | 164 (36.9) | 1678 (52.9) |
| Contact COVID-19 | |||||||||
| No | 4325 (89.6) | 3348 (89.8) | 887 (89) | 3093 (90.3) | 283 (89.3) | 859 (87.4) | 994 (89.7) | 396 (89) | 2845 (89.7) |
| Yes | 491 (10.4) | 381 (10.2) | 110 (11) | 333 (9.7) | 34 (10.7) | 124 (12.6) | 114 (10.3) | 49 (11) | 328 (10.3) |
Values are frequencies (percentages).
BMI: Body Mass Index.