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Table 2 Consensus across different rating scales

From: Comparison of different rating scales for the use in Delphi studies: different scales lead to different consensus and show different test-retest reliability

Treatment goal: top category

Consensus on specific treatment goals

1st survey

2nd survey

three-point scale

five-point scale*

nine-point scale*

three-point scale

five-point scale*

nine-point scale*

preventing secondary impairments

82.8

69.0

90.8

85.1

70.1

89.7

duration of hospitalization

52.9

36.8

64.4

48.3

39.1

62.1

stability

94.3

79.3

97.7

96.6

81.6

96.6

pain

89.7

79.3

95.4

95.4

79.3

94.3

implant survival

79.3

75.9

89.7

86.2

73.6

83.9

quality of life

87.4

73.6

97.7

89.7

74.7

90.8

range of motion (ROM)

92.0

80.5

96.6

93.1

79.3

96.6

activity of daily life

86.2

78.2

94.3

89.7

77.0

88.5

malalignment

66.7

47.1

72.4

63.2

46.0

72.4

strength

79.3

60.9

93.1

80.5

65.5

92.0

employability

54.0

35.6

64.4

56.3

47.1

65.5

walking stairs

86.2

74.7

92.0

89.7

77.0

89.7

walking distance

93.1

75.9

96.6

92.0

75.9

94.3

no side effects

78.2

67.8

83.9

74.7

71.3

82.8

participation in social life

82.8

65.5

89.7

81.6

60.9

87.4

sex life

20.7

17.2

31.0

19.5

20.7

29.9

physical function

83.9

64.4

90.8

85.1

70.1

93.1

physical activity

71.3

59.8

88.5

70.1

70.1

80.5

global health status

90.8

73.6

94.3

89.7

79.3

92.0

Consensus threshold

Number of treatment goals that reached the threshold

1st survey

2nd survey

three-point scale (%)

five-point scale* (%)

nine-point scale* (%)

three-point scale (%)

five-point scale* (%)

nine-point scale* (%)

>  60%

16 (84.2)

14 (73.7)

18 (94.7)

16 (84.2)

15 (78.9)

18 (94.7)

>  70%

15 (78.9)

9 (47.4)

16 (84.2)

15 (78.9)

13 (68.4)

16 (84.2)

>  75%

14 (73.7)

6 (31.6)

15 (78.9)

13 (68.4)

7 (36.8)

15 (78.9)

>  80%

11 (57.9)

1 (5.3)

15 (78.9)

13 (68.4)

1 (5.3)

15 (78.9)

>  90%

4 (21.0)

0 (0)

11 (57.9)

4 (21.0)

0 (0)

8 (42.1)

  1. The first part of the table shows the percentage of ratings as “main goal” of the 87 participants per survey across each treatment goal provided. The second part of the table shows the number and percentage of treatment goals that reached a certain level of consensus. In case of the three-point scale, the “main goal” is the top category. Five-point*/nine-point* scales: the top category of the five-point* scale, is “very important”, and for the nine-point* scale categories “9”, “8” and “7”