Incidence of fractures among elderly people by nature of injury, age, sex, and season of the year
| Women | Men | Both sexes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Incidence/ 100 000 person years | Incidence/ 100 000 person years | |||||||||
| Winter | Summer | Incidence rate ratio (95% CI) | PAR (%) | Winter | Summer | Incidence rate ratio (95% CI) | PAR (%) | Incidence rate ratio (95% CI) | PAR (%) | |
| CI = confidence interval; PAR = population attributable risk. | ||||||||||
| Summer: 1 April through 30 September; winter: 1 October through 31 March. | ||||||||||
| 65–79 years | ||||||||||
| Hip | 820 | 684 | 1.20 (1.08 to 1.33) | 9 | 418 | 293 | 1.42 (1.20 to 1.70) | 18 | 1.27 (1.15 to 1.37) | 12 |
| Arm | 1473 | 872 | 1.69 (1.55 to 1.84) | 26 | 357 | 211 | 1.69 (1.39 to 2.05) | 26 | 1.69 (1.56 to 1.83) | 26 |
| Other | 560 | 478 | 1.17 (1.04 to 1.33) | 8 | 270 | 262 | 1.03 (0.85 to 1.25) | 1 | 1.12 (1.02 to 1.25) | 6 |
| Any | 2853 | 2035 | 1.40 (1.32 to 1.49) | 17 | 1044 | 766 | 1.36 (1.22 to 1.52) | 15 | 1.39 (1.32 to 1.47) | 16 |
| ≥80 years | ||||||||||
| Hip | 3235 | 3056 | 1.06 (0.98 to 1.15) | 3 | 1769 | 1571 | 1.13 (0.96 to 1.32) | 6 | 1.08 (1.00 to 1.15) | 4 |
| Arm | 1544 | 1247 | 1.24 (1.10 to 1.40) | 11 | 527 | 346 | 1.52 (1.10 to 2.09) | 21 | 1.30 (1.13 to 1.43) | 13 |
| Other | 813 | 618 | 1.31 (1.11 to 1.56) | 14 | 522 | 379 | 1.38 (1.01 to 1.88) | 16 | 1.34 (1.14 to 1.54) | 14 |
| Any | 5592 | 4922 | 1.14 (1.07 to 1.21) | 6 | 2819 | 2297 | 1.23 (1.08 to 1.40) | 10 | 1.17 (1.09 to 1.22) | 8 |