Table 1.
Clinical characteristics of the infants hospitalised for acute bronchiolitis in a tertiary university paediatric hospital in Paris (France) between 2017 and 2021
| Pre-COVID-19 period | COVID-19 period | P value* | ||||
| 2017–2018 | 2018–2019 | 2019–2020 | 2017–2020 aggregated data | 2020–2021 | ||
| Infants, n | 479 | 451 | 417 | 1347 | 205 | – |
| Age (months): median (IQR) | 2.8 (1.5–4.9) | 2.6 (1.4–4.8) | 2.4 (1.3–4.4) | 2.5 (1.4–4.7) | 2.7 (1.5–4.7) | 0.7 |
| Gender: boys, n (%) | 279 (58.2) | 249 (55.2) | 244 (58.5) | 772 (57) | 119 (58) | 0.5 |
| Comorbidities, n (%) | 66 (14) | 66 (15) | 53 (13) | 185 (14) | 16 (8) | 0.02 |
| Weight (kg): median (IQR) | 5.6 (4.4–6.9) | 5.5 (4.6–7.0) | 5.4 (4.3–7.0) | 5.5 (4.4–7.0) | 5.7 (4.5–6.9) | 0.6 |
| Evolution | ||||||
| Duration of hospitalisation (days), median (IQR) | 2.4 (1.2–4.0) | 3.0 (2.0–4.0) | 3.9 (2.0–5.0) | 3.0 (2.0–4.9) | 3.0 (1.5–4.2) | 0.3 |
| Oxygen therapy, n (%) | 259 (54) | 237 (52) | 257 (61) | 753 (56) | 93 (45) | 0.01 |
| Intensive care unit, n (%) | 48 (13) | 42 (9) | 67 (16) | 157 (12) | 21 (11) | 0.6 |
| Non-invasive ventilation, n (%) | 42 (8) | 38 (8) | 67 (16) | 147 (11) | 22 (12) | 0.9 |
| Invasive ventilation, n (%) | 5 (1) | 5 (1) | 7 (1.6) | 17 (1.2) | 3 (1.7) | 0.6 |
| Extracorporeal circulation, n (%) | 2 (0.4) | 0 (0) | 2 (0.4) | 4 (0.2) | 0 (0) | 0.4 |
*P value for the comparison between pre-COVID-19 aggregated data and COVID-19 data using χ2 test for categorical variables and Mann-Whitney test for continuous variables.