| 2012–2013, n (%) | 2013–2014, n (%) | 2014–2015, n (%) | |
|---|---|---|---|
| N | 1756 | 1424 | 1726 |
| Colds/flu-like diseases frequency (MD = 69) | |||
| Rare | 1291 (74.5) | 1011 (72.1) | 1285 (75.5) |
| Often | 421 (24.3) | 363 (25.9) | 393 (23.1) |
| Don’t know | 20 (1.2) | 28 (2.0) | 25 (1.4) |
| Flu vaccination for the current season (MD = 0) | |||
| No | 1360 (77.5) | 1062 (74.5) | 1278 (74.0) |
| Yes | 394 (22.4) | 361 (25.4) | 445 (25.8) |
| Don’t know | 2 (0.1) | 1 (0.1) | 3 (0.2) |
| Smoking status (MD = 0) | |||
| Never smoked | 1019 (58.0) | 819 (57.5) | 997 (57.8) |
| Used to smoke | 480 (27.4) | 408 (28.7) | 517 (30.0) |
| Still smoking | 257 (14.6) | 197 (13.8) | 212 (12.2) |
| Comorbidities (MD = 0) | |||
| No comorbidities | 1430 (81.4) | 1135 (79.7) | 1363 (79.0) |
| ≥1 comorbidity | 326 (18.6) | 289 (20.3) | 363 (21.0) |
| Treated asthma | 131 (7.5) | 118 (8.3) | 144 (8.3) |
| Treated diabetes | 48 (2.7) | 47 (3.3) | 48 (2.8) |
| Treated heart condition | 119 (6.8) | 90 (6.3) | 142 (8.2) |
| Treated kidney condition | 7 (0.4) | 10 (0.7) | 9 (0.5) |
| Treated immunodepression | 47 (2.7) | 40 (2.8) | 49 (2.8) |
| Treated pulmonary condition | 50 (2.8) | 51 (3.6) | 58 (3.4) |
| ≥1 respiratory allergy (MD = 0) | 677 (38.6) | 566 (39.7) | 659 (38.2) |
| Pregnancy (MD = 35) | |||
| Pregnant | 7 (0.4) | 8 (0.6) | 24 (1.4) |
| Not pregnant | 544 (31.3) | 424 (29.9) | 512 (29.8) |
| Not applicable (men or women <15 or >50 years old) | 1188 (68.3) | 984 (69.5) | 1180 (68.8) |
| BMI, kg/m2 (MD = 73) | |||
| <18.5 | 200 (11.6) | 156 (11.1) | 190 (11.2) |
| 18.5–29 | 1348 (78.1) | 1081 (76.8) | 1296 (76.2) |
| 30–39 | 158 (9.2) | 152 (10.8) | 197 (11.5) |
| ≥40 | 19 (1.1) | 19 (1.3) | 18 (1.1) |
| At risk of influenza complications (MD = 85) | |||
| No | 1215 (70.8) | 954 (67.8) | 1114 (65.6) |
| Yes | 501 (29.2) | 453 (32.2) | 584 (34.4) |
BMI = body mass index. MD = missing data.