Table 1. Sociodemographic and professional characteristics of the 1,881 study respondents.
| Characteristics, n(%) | Paramedical HCW (N = 1,480) | Medical HCW (N = 401) |
| Age (year), mean (SD) | 36.2 (10.5) | 33.7 (10.6) |
| Female | 1,225/1,475 (83.1) | 230/400 (57.5) |
| Chronic disease | 109/1,446 (7.5) | 18/398 (4.5) |
| Living alone | 211/1,407 (15.0) | 78/395 (19.7) |
| Children in the household | 364/1,147 (31.7) | 86/294 (29.3) |
| Pregnant | 41/1,092 (3.8) | 14/287 (4.9) |
| Type of ward | ||
| ICU/ED | 314/1,418 (22.1) | 116/396 (29.3) |
| Medical* or Surgical | 783/1,418 (55.2) | 257/396 (64.9) |
| Geriatric | 321/1,418 (22.6) | 23/396 (5.8) |
| SIV during the 2006, 2007 and 2008 campaigns | ||
| Never | 808/1,431 (56.5) | 121/395 (30.6) |
| Once | 269/1,431 (18.8) | 77/395 (19.5) |
| Twice | 127/1,431 (8.9) | 61/395 (15.4) |
| Always | 227/1,431 (15.9) | 136/395 (34.4) |
HCW = healthcare workers. ICU/ED = intensive care unit/emergency department. SIV = seasonal influenza vaccination. *Including obstetrics and pediatrics.