Table 1. Baseline characteristics of all GrippeNet.fr included participants, depending on their vaccination status.
| Vaccinated individuals % (number) |
Unvaccinated individuals % (number) |
Overall % (number) |
P value | |
|---|---|---|---|---|
| Socio-demographic factors | ||||
| Gender (women) | 55% (359) | 65% (873) | 62% (1232) | <10−3 |
| Age: | <10−3 | |||
| 0–49* | 21% (140) | 41% (553) | 35% (693) | |
| 50–64 | 31% (203) | 40% (530) | 37% (733) | |
| ≥65 | 48% (314) | 19% (256) | 28% (570) | |
| Presence of a child (under five years) in the household | 7% (46) | 14% (182) | 11% (228) | <10−3 |
| Health factors | ||||
| To take regular medication for asthma | 8% (51) | 4% (53) | 5% (104) | <10−3 |
| To take regular medication for a lung disorder | 4% (25) | 1% (13) | 2% (38) | <10−3 |
| To take regular medication for diabetes, a heart disorder, kidney disorder or an immunocompromising condition | 23% (151) | 9% (125) | 14% (276) | <10−3 |
| Frequency of cold/flu: | 0.32 | |||
| - Less than one per year | 48% (319) | 45% (602) | 46% (921) | |
| - One or two per year | 37% (241) | 39% (523) | 38% (764) | |
| - At least three per year | 15% (97) | 16% (214) | 16% (311) | |
| Dependent variable | ||||
| To have at least one ILI during the epidemic period | 7% (43) | 13% (170) | 11% (213) | <10−3 |
| Total | 33% (657) | 67% (1339) | 100% (1996) | |
*One child under 5 y.