Table 2.
Seasonal average HF incidence rates by sex, age groups, and type of fracture. Difference between autumn and summer
| Winter | Spring | Summer | Autumn | Difference autumn/summer | ||
|---|---|---|---|---|---|---|
| IRR | % | |||||
| Sex | ||||||
| Overall | ||||||
| Mean | 174.47 | 158.80 | 156.30 | 181.13 | 1.16 | − 15.9 |
| LCI | 172.24 | 156.67 | 154.19 | 178.86 | 1.15 | |
| UCI | 176.70 | 160.92 | 158.41 | 183.40 | 1.17 | |
| Women | ||||||
| Mean | 222.23 | 206.42 | 202.70 | 233.86 | 1.15 | − 15.4 |
| LCI | 218.91 | 203.22 | 199.53 | 230.46 | 1.14 | |
| UCI | 225.55 | 209.62 | 205.87 | 237.27 | 1.17 | |
| Men | ||||||
| Mean | 109.55 | 94.12 | 93.28 | 109.50 | 1.17 | − 17.4 |
| LCI | 107.22 | 91.93 | 91.10 | 107.17 | 1.14 | |
| UCI | 112.65 | 96.97 | 96.12 | 112.60 | 1.21 | |
| Age | ||||||
| 65–74 years | ||||||
| Mean | 34.84 | 32.39 | 33.55 | 35.32 | 1.05 | − 5.3 |
| LCI | 33.41 | 31.02 | 32.16 | 33.89 | 1.02 | |
| UCI | 36.26 | 33.76 | 34.95 | 36.75 | 1.08 | |
| 75–84 years | ||||||
| Mean | 178.94 | 166.58 | 159.52 | 182.59 | 1.14 | − 14.5 |
| LCI | 175.12 | 162.90 | 155.92 | 178.74 | 1.13 | |
| UCI | 182.75 | 170.26 | 163.12 | 186.44 | 1.16 | |
| ≥ 85 years | ||||||
| Mean | 605.41 | 540.48 | 536.73 | 638.35 | 1.19 | − 18.9 |
| LCI | 594.91 | 530.55 | 526.84 | 627.57 | 1.18 | |
| UCI | 615.91 | 550.40 | 546.62 | 649.13 | 1.20 | |
| Type of fracture | ||||||
| Extracapsular | ||||||
| Mean | 95.03 | 87.34 | 85.85 | 100.54 | 1.17 | − 17.1 |
| LCI | 93.38 | 85.76 | 84.28 | 98.85 | 1.16 | |
| UCI | 96.68 | 88.92 | 87.42 | 102.24 | 1.18 | |
| Intracapsular | ||||||
| Mean | 79.44 | 71.46 | 70.45 | 80.59 | 1.14 | − 14.4 |
| LCI | 77.93 | 70.03 | 69.03 | 79.07 | 1.13 | |
| UCI | 80.95 | 72.89 | 71.87 | 82.11 | 1.16 | |
IRR incidence rate ratio, LCI lower confidence interval, UCI upper confidence interval