Skip to main content

Table 1 Demographic description of the orthopaedic research in relation to region of development, orthopaedic sub-specialty and level of evidence

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