Table 3 Main characteristics of influenza or I-LSs episodes registered in the questionnaire according to vaccination and smoking status
Did you receive annual vaccination? | Smoking status | |||||||
|---|---|---|---|---|---|---|---|---|
Never N = 685 (57%) | Sometimes N = 335 (30%) | Yes N = 170 (14%) | p | Smokers N = 243 (20%) | Never smoke N = 807 (67%) | Ex-smokers N = 150 (13%) | p | |
Respondents with influenza or I-LSs episodes | 393 (57.4%) | 185 (55.2%) | 102 (60.0%) | 0.58 | 136 (56.0%) | 470 (58.2%) | 80 (53.3%) | 0.49 |
Episodes per year ─ mean (range) | 1.83 (1.57; 2.10) | 1.77 (1.52; 2.02) | 1.72 (1.49; 1.95) | 0.63 | 1.78 (1.53; 2.03) | 1.82 (1.56; 2.08) | 1.73 (1.49; 1.96) | 0.94 |
1 episode ─ N (%) | 198 (50.8%) | 97 (53.0%) | 58 (58.6%) | 73 (54.1%) | 239 (51.6%) | 44 (55.7%) | ||
2–3 episodes ─ N (%) | 177 (45.4%) | 81 (44.3%) | 37 (37.4%) | 57 (42.2%) | 206 (44.5%) | 33 (41.8%) | ||
> 3 episodesa ─ N (%) | 15 (3.8%) | 5 (2.7%) | 4 (4.0%) | 5 (3.7%) | 18 (3.9%) | 2 (2.5%) | ||
Duration ─ mean (range) | 5.16 (2.33; 7.99) | 5.20 (2.36; 8.04) | 5.71 (2.76; 8.65) | 0.29 | 5.10 (2.28; 7.92) | 5.27 (2.42; 8.13) | 5.56 (2.65; 8.48) | 0.59 |
< 7 days ─ N (%) | 306 (77.9%) | 143 (77.3%) | 72 (70.6%) | 107 (78.7%) | 359 (76.4%) | 58 (72.5%) | ||
7–15 days ─ N (%) | 87 (22.1%) | 42 (22.7%) | 30 (29.4%) | 29 (24.4%) | 111 (23.6%) | 22 (27.5%) | ||
Subjects requiring GP ─ N (%) | 212 (53.9%) | 107 (57.8%) | 60 (58.8%) | 0.54 | 74 (54.4%) | 269 (57.2%) | 39 (48.8%) | 0.35 |
Subjects requiring ER ─ N (%) | 8 (2.0%) | 7 (3.8%) | 4 (3.9%) | 0.37 | 4 (5.7%) | 12 (4.5%) | 3 (7.7%) | 0.83 |
Hospitalizations ─ N (%) | 1 (0.3%) | 1 (0.5%) | 4 (3.9%) | 0.08 | 0 (0.0%) | 3 (0.6%) | 3 (3.8%) | 0.01 |
< 7 days ─ N (%) | 0 (0%) | 0 (0%) | 3 (75.0%) | 0 (0.0%) | 1 (33.3%) | 2 (66.7%) | ||
16–30 days ─ N (%) | 1 (100.0%) | 1 (100.0%) | 1 (25.0%) | 0 (0.0%) | 2 (66.7%) | 1 (33.3%) | ||