TABLE 2.
Estimated seasonal average annual influenza‐attributable hospitalisation rate per 100,000 population by principal diagnosis and age group, Australia, 2001–2017 a
| Principal diagnosis | Age group | |||
|---|---|---|---|---|
| 50–64 years | ≥65 years | |||
| Rate (95% CI) | Counts (95% CI) | Rate (95% CI) | Counts (95% CI) | |
| Influenza/pneumonia | 32.3 (31.2, 33.3) | 1,287 (1,247, 1,326) | 123.6 (120.2, 126.9) | 3,975 (3,872, 4,077) |
| Respiratory | 78.9 (76.3, 81.4) | 3,071 (2,972, 3,170) | 287.5 (279.8, 295.3) | 8,869 (8,632, 9,106) |
| Circulatory | 0.7 (−5.2, 6.6) | 10 (−219, 240) | 57.2 (42.1, 72.3) | 1,650 (1,194, 2,107) |
| Myocardial infarction | 1.2 (0.1, 2.4) | 45 (0, 90) | 13.9 (11.2, 16.6) | 377 (297, 458) |
Abbreviation: CI, confidence interval.
a
July 2001 to December 2017 period, the 2009 pandemic year was excluded in the average calculation, and both statistically significant and non‐significant estimates were included in the average.