Table 2 Patients’ and epidemics characteristics over the 5 influenza epidemic seasons
|  | 2014–2015 N = 202 | 2015–2016 N = 152 | 2016–2017 N = 405 | 2017–2018 N = 464 | 2018–2019 N = 336 | p value |
|---|---|---|---|---|---|---|
Age in years, median (IQR) | 79.93 (56.76–87.66) | 71.21 (49.96–81.01) | 81.45 (67.35–87.78) | 78.45 (64.43–87.49) | 79.27 (65.45–86.66) | 0.0001* |
Male sex, N (%) | 86 (42.57) | 76 (50.00) | 185 (45.68) | 218 (46.98) | 160 (47.62) | 0.677** |
Virus type, N (%) | ||||||
-Â A | 180 (89.11) | 72 (47.37) | 405 (100.00) | 141 (30.39) | 336 (100.00) | Â |
- B | 17 (8.42) | 80 (52.63) | 0 (0.00) | 323 (69.61) | 0 (0.00) | – |
-Â A/B | 5 (2.48) | 0 (0.00) | 0 (0.00) | 0 (0.00) | 0 (0.00) | Â |
Nosocomial cases, N (%) | 48 (23.76) | 36 (23.68) | 90 (22.22) | 84 (18.10) | 89 (26.49) | 0.074** |
Severity risk factor(s), N (%) | NA | 118 (78.67) | 388 (95.80) | 424 (91.38) | 324 (96.43) | < 0.0001** |
Patients vaccination, N (%) | NA | 52 (41.60) | 164 (53.25) | 170 (48.02) | 128 (53.56) | 0.086** |
Oseltamivir treatment, N (%) | NA | 124 (84.35) | 356 (88.12) | 337 (73.26) | 284 (84.52) | < 0.0001** |
Droplet precautions, N (%) | NA | 110 (78.57) | 282 (70.15) | 343 (74.24) | 224 (66.67) | 0.025** |
ICU stay, N (%) | NA | 18 (15.65) | 49 (12.10) | 42 (9.05) | 35 (10.42) | 0.173** |
Death, N (%) | NA | 4 (3.96) | 37 (9.14) | 33 (7.11) | 12 (3.57) | 0.014** |