From: Heterogeneity of the definition of elderly age in current orthopaedic research
Median age | Range | Standard deviation | Variance | |
---|---|---|---|---|
Development region | ||||
North America (n = 18) | 65 | 50–70 | 4.93 | 24.27 |
Europe (n = 19) | 65 | 50–75 | 6.39 | 40.81 |
Asia (n = 41) | 65 | 50–80 | 6.29 | 39.62 |
South America (n = 1) | 65 | – | – | – |
Africa (n = 1) | 65 | – | – | – |
Sub-specialty | ||||
Trauma (n = 45) | 65 | 50–80 | 5.88 | 34.61 |
Upper limb (n = 4) | 62.5 | 50–65 | 7.07 | 50 |
Pelvis/hip/knees (n = 11) | 65 | 50–75 | 6.71 | 50 |
Spine (n = 19) | 65 | 50–75 | 5.52 | 30.52 |
Foot and ankle (n = 1) | 70 | – | – | – |
Level of evidence | ||||
I | 65 | 60–67 | 3.61 | 13 |
II | 65 | 60–75 | 5.48 | 30 |
III | 65 | 50–80 | 5.96 | 35.56 |
IV | 62.5 | 50–75 | 6.21 | 38.64 |