Age group | Frequency per 1000 person-years | Change (%) | P-value b | |
---|---|---|---|---|
2008–2009 a | 2014 | |||
< 1 y | 34.6 | 22.5 | −34.8 | < 0.0001 |
1 y | 51.4 | 39.9 | −22.4 | < 0.0001 |
2–4 y | 40.9 | 33.9 | −17.2 | < 0.0001 |
5–17 y | 15.9 | 12.8 | −19.5 | < 0.0001 |
18–49 y | 8.6 | 6.8 | −20.7 | < 0.0001 |
50–64 y | 15.0 | 13.1 | −12.7 | < 0.0001 |
65–74 y | 29.4 | 26.4 | −10.1 | < 0.0001 |
75–84 y | 53.4 | 52.6 | −1.5 | 0.0054 |
≥ 85 y | 89.1 | 95.7 | + 7.4 | < 0.0001 |
Overall | 16.1 | 13.5 | −16.1 | < 0.0001 |