Table 1.
Characteristics of the study population.
| Characteristic | Totala | Vaccinated | Non-vaccinated | p-valuesb | Odds ratio | (p-value) |
|---|---|---|---|---|---|---|
| (N = 776, 100%) | (N = 684, 88%) | (N = 92, 12%) | (Chi2-test) | (Regression analysis) | ||
| Sex: N (%) | <0.001 | |||||
| Female | 651 (84%) | 574 (88%) | 77 (12%) | Reference category | ||
| Male | 102 (13%) | 96 (94%) | 6 (6%) | 2.1 | (p = 0.081) | |
| Missing information | 23 (3%) | 14 (61%) | 9 (39%) | NA | ||
| No of years working at the HUG: N (%) | 0.001 | |||||
| >10 years | 468 (60%) | 423 (90%) | 45 (10%) | Reference category | ||
| 6–10 years | 135 (17%) | 121 (90%) | 14 (10%) | 0.9 | (p = 0.795) | |
| 1–5 years | 132 (17%) | 110 (83%) | 22 (17%) | 0.5 | (p = 0.025) | |
| <1 year | 19 (3%) | 16 (84%) | 3 (16%) | 0.6 | (p = 0.382) | |
| Missing information | 22 (3%) | 14 (2%) | 8 (9%) | 0.2 | (p < 0.001) | |
| Professional category: N (%) | 0.001 | |||||
| Nurse | 332 (43%) | 289 (87%) | 43 (13%) | Reference category | ||
| Doctor | 208 (27%) | 196 (94%) | 12 (6%) | 2.4 | (p = 0.009) | |
| Auxiliary nursing staff | 34 (4%) | 27 (79%) | 7 (21%) | 0.6 | (p = 0.222) | |
| Patient care technician | 4 (1%) | 4 (100%) | 0 (0%) | NA | ||
| Administrator staff | 95 (12%) | 82 (86%) | 13 (14%) | 0.9 | (p = 0.852) | |
| Respiratory, physical, or speech therapist | 55 (7%) | 50 (91%) | 5 (9%) | 1.5 | (p = 0.424) | |
| Social workers | 2 (0%) | 1 (50%) | 1 (50%) | 0.2 | (p = 0.181) | |
| Other categoryc | 24 (3%) | 21 (88%) | 3 (13%) | 1.0 | (p = 0.949) | |
| Missing information | 22 (3%) | 14 (64%) | 8 (36%) | NA | ||
| Working with risk groups: N (%) | 0.439 | |||||
| None | 141 (18%) | 121 (86%) | 20 (14%) | Reference category | ||
| New born | 21 (3%) | 17 (2%) | 4 (4%) | 0.9 | (p = 0.844) | |
| Toddler | 18 (2%) | 17 (2%) | 1 (1%) | 3.6 | (p = 0.225) | |
| Immunocompromised patients (IP) | 36 (5%) | 36 (5%) | 0 (0%) | NA | ||
| Pregnant | 70 (9%) | 62 (9%) | 8 (9%) | 1.6 | (p = 0.254) | |
| Toddler and IP | 19 (2%) | 18 (3%) | 1 (1%) | 3.8 | (p = 0.205) | |
| New born and IP | 4 (0.5%) | 4 (1%) | 0 (0%) | NA | ||
| New born and toddler | 35 (5%) | 31 (5%) | 4 (4%) | 1.6 | (p = 0.393) | |
| Pregnant and new born | 92 (12%) | 81 (12%) | 11 (12%) | 1.5 | (p = 0.251) | |
| Pregnant and toddler | 9 (1%) | 9 (1%) | 0 (0%) | NA | ||
| Pregnant and IP | 10 (1%) | 9 (1%) | 1 (1%) | 1.9 | (p = 0.554) | |
| All risk groups patients | 106 (14%) | 93 (14%) | 13 (14%) | 1.5 | (p = 0.256) | |
| New born, pregnant, and IP | 19 (2%) | 17 (2%) | 2 (2%) | 1.8 | (p = 0.456) | |
| New born, toddler, and IP | 37 (5%) | 33 (5%) | 4 (4%) | 1.7 | (p = 0.333) | |
| Pregnant, new born, and toddler | 117 (15%) | 105 (15%) | 12 (13%) | 1.8 | (p = 0.095) | |
| Pregnant, toddler, and IP | 4 (0.5%) | 4 (1%) | 0 (0%) | NA | ||
| Missing information | 38 (5%) | 27 (4%) | 11 (12%) | NA | ||
| Chronic disease: N (%) | 0.038 | |||||
| Nobody | 518 (67%) | 459 (89%) | 59 (11%) | Reference category | ||
| Yes, me | 65 (8%) | 58 (89%) | 7 (11%) | 1.1 | (p = 0.882) | |
| Yes, my household contacts | 156 (20%) | 139 (89%) | 17 (11%) | 1.1 | (p = 0.865) | |
| Me and my household contacts | 12 (2%) | 11 (92%) | 1 (8%) | 1.7 | (p = 0.042) | |
| Missing information | 25 (3%) | 17 (68%) | 8 (32%) | 0.3 | (p = 0.004) | |
| Living with children: N (%) | 0.059 | |||||
| No kids | 277 (36%) | 248 (90%) | 29 (10%) | Reference category | ||
| <12 years | 200 (26%) | 175 (88%) | 25 (13%) | 0.8 | (p = 0.490) | |
| 12–18 years | 85 (11%) | 72 (85%) | 13 (15%) | 0.6 | (p = 0.227) | |
| >18 years | 93 (12%) | 85 (91%) | 8 (9%) | 1.2 | (p = 0.604) | |
| 12–18 and >18 years | 37 (5%) | 34 (92%) | 3 (8%) | 1.3 | (p = 0.657) | |
| <12 and >18 years | 3 (0%) | 3 (100%) | 0 (0%) | NA | ||
| <12 and 12–18 years | 48 (6%) | 44 (92%) | 4 (8%) | 1.3 | (p = 0.652) | |
| All categories | 8 (1%) | 6 (75%) | 2 (25%) | 0.4 | (p = 0.212) | |
| Missing information | 25 (3%) | 17 (68%) | 8 (32%) | 0.2 | (p < 0.001) |
a
Five persons (out of the total of 781 who responded to the questionnaire) did not indicate if they had been vaccinated or not and were excluded from analysis.
b
p < 0.05 indicates a significant difference (highlighted in bold).
c
Other category: education teacher, biologist, research, and laboratory staff.