TABLE 2.
Summary of the characteristics of the hospitalizations for influenza per age group in France, 2010–2018 seasons
| Age group (years) | All ages | |||||||
|---|---|---|---|---|---|---|---|---|
| 0–4 | 5–19 | 20–49 | 50–64 | 65–74 | 75–84 | ≥85 | ||
| Median length of hospital stays (days) | ||||||||
| Median | 3 | 3 | 4 | 7 | 8 | 8 | 10 | 5 |
| [Range] | [3–3] | [3–3] | [3–4] | [6–7] | [7–8] | [8–9] | [9–10] | [4–7] |
| Emergency unit transfer proportion a (%) | ||||||||
| Median | 18.6 | 22.7 | 31.2 | 22.0 | 21.8 | 23.7 | 25.2 | 23.6 |
| [Range] | [17.1–20.2] | [21.9–31.0] | [30.1–33.0] | [18.7–25.4] | [20.0–23.2] | [21.3–24.9] | [22.8–25.6] | [22.3–24.6] |
| Intensive care unit transfer proportion a (%) | ||||||||
| Median | 0.0 | 1.2 | 13.2 | 23.1 | 19.8 | 13.8 | 6.3 | 11.4 |
| [Range] | [0.0–0.1] | [1.2–1.7] | [10.0–15.8] | [18.2–26.9] | [17.6–23.4] | [11.1–16.9] | [5.3–6.9] | [9.5–12.8] |
| In‐hospital death proportion (%) | ||||||||
| Median | 0.1 | 0.4 | 1.0 | 4.1 | 6.1 | 6.6 | 9.3 | 2.9 |
| [Range] | [0.0–0.2] | [0.1–0.7] | [0.4–1.8] | [2.3–5.5] | [3.9–6.9] | [5.1–7.5] | [7.1–11.6] | [2.1–5.2] |
| 3‐month readmission proportion (%) | ||||||||
| All causes | ||||||||
| Median | 13.4 | 13.1 | 23.9 | 25.8 | 27.7 | 26.0 | 21.9 | 20.6 |
| [Range] | [11.5–14.5] | [11.6–28.3] | [23.4–28.6] | [23.2–28.9] | [25.4–28.9] | [24.4–28.0] | [20.6–24.2] | [19.5–23.7] |
| Respiratory cause | ||||||||
| Median | 5.0 | 2.3 | 2.8 | 6.6 | 6.8 | 6.0 | 5.5 | 4.8 |
| [Range] | [4.3–5.3] | [1.4–3.0] | [2.1–7.1] | [5.7–7.5] | [5.9–7.5] | [5.1–7.4] | [4.3–6.0] | [4.4–5.5] |
| Cardiac cause | ||||||||
| Median | 0.1 | 0.3 | 1.2 | 4.6 | 6.3 | 6.3 | 5.8 | 2.8 |
| [Range] | [0.1–0.7] | [0.2–2.2] | [1.1–6.0] | [4.4–6.9] | [5.1–8.8] | [5.6–8.8] | [5.2–6.4] | [2.0–5.1] |
a
Data available only from the epidemic season 2012–2013.