| N | Number of ILI episodes with a GP consultation, n (%) | OR (95% CI) | P-value | |
|---|---|---|---|---|
| Level of education | ||||
| Above high school diploma | 3312 | 972 (29.3) | 1 (Ref) | |
| High school diploma or equivalent | 895 | 287 (32.1) | 1.25 (1.03 to 1.52) | 0.021 |
| Below high school diploma | 780 | 293 (37.6) | 1.43 (1.18 to 1.74) | <0.001 |
| Not applicable (age <16 years) | 579 | 266 (45.9) | 1.63 (1.30 to 2.03) | <0.001 |
| Residence | ||||
| Urban | 4859 | 1554 (32.0) | 1 (Ref) | |
| Rural | 1164 | 407 (35.0) | 1.21 (1.02 to 1.43) | 0.026 |
| Internet search in case of ILI | ||||
| No | 5493 | 1733 (31.5) | 1 (Ref) | |
| Yes | 457 | 210 (46.0) | 1.63 (1.30 to 2.03) | <0.001 |
| Previous GP consultation for ILI during the current influenza season | ||||
| No | 5648 | 1733 (31.4) | 1 (Ref) | |
| Yes | 375 | 188 (50.1) | 1.43 (1.11 to 1.83) | 0.005 |
| Alternative medicines utilisation | ||||
| No | 4450 | 1529 (34.4) | 1 (Ref) | |
| Yes | 1568 | 431 (27.5) | 0.68 (0.58 to 0.78) | <0.001 |
| Symptomsa | ||||
| Fever | 3039 | 1350 (44.4) | 2.57 (2.26 to 2.93) | <0.001 |
| Sneezing | 3296 | 1042 (31.6) | 0.78 (0.69 to 0.88) | <0.001 |
| Cough | 4411 | 1633 (37.0) | 1.60 (1.37 to 1.86) | <0.001 |
| Dyspnea | 1271 | 558 (43.9) | 1.38 (1.19 to 1.60) | <0.001 |
| Sputum | 1148 | 551 (48.0) | 1.75 (1.50 to 2.05) | <0.001 |
| Asthenia | 2903 | 1209 (41.6) | 1.93 (1.70 to 2.19) | <0.001 |
aThe reference group had no symptoms. ILI = influenza-like illness. OR = odds ratio. Ref = reference.