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Table 2 Summary statistics for framework elements (average (range))a

From: Understanding occupational safety and health surveillance: expert consensus on components, attributes and example measures for an evaluation framework

Element

Delphi processb

Category

#Element

Mean rating

Mode

Difference

SD

%Panelists rated 3 or above

Component

After 1st review

All

59

4.3 (3.4, 4.9)

4.6 (3, 5)

2.0 (1, 3)

0.7 (0.3, 1.2)

95 (80, 100)

High consensus

34

4.6 (4.0, 4.9)

4.9 (4, 5)

1.6 (1, 2)

0.6 (0.3, 0.9)

99 (90, 100)

For confirmation

22

3.9 (3.4, 4.5)

4.1 (3, 5)

2.6 (1, 3)

0.9 (0.5, 1.2)

90 (80, 100)

Dropped

3

4.1 (3.7, 4.6)

4.3 (4, 5)

2.0 (2, 2)

0.7 (0.7, 0.7)

97 (90, 100)

After 2nd review

High consensus

45

4.5 (4.0, 4.9)

4.9 (4, 5)

1.6 (1, 2)

0.6 (0.3, 0.9)

98 (80, 100)

Low consensus

19

3.8 (3.5, 4.4)

4.1 (3, 5)

2.7 (2, 3)

0.9 (0.6, 1.2)

88 (60, 100)

Dropped

1

4

5

3

1.3

50

Final list

All

64

4.3 (3.5, 4.9)

4.6 (3, 5)

2.0 (1, 3)

0.7 (0.3, 1.2)

95 (60, 90)

Attribute

After 1st review

All

32

4.2 (3.6, 4.8)

4.5 (3, 5)

2.0 (1, 3)

0.8 (0.4, 1.2)

96 (80, 100)

High consensus

24

4.4 (4.0, 4.8)

4.6 (4, 5)

1.7 (1, 2)

0.7 (0.4, 0.9)

99 (90, 100)

For confirmation

8

3.9 (3.6, 4.3)

4.1 (3, 5)

2.8 (2, 3)

1.0 (0.7, 1.2)

89 (80, 100)

Dropped

0

/

/

/

/

/

After 2nd review

High consensus

26

4.4 (4.0, 4.8)

4.6 (4, 5)

1.7 (1, 2)

0.7 (0.4, 0.9)

99 (90, 100)

Low consensus

5

3.7 (3.3, 4.0)

3.6 (3, 5)

2.8 (2, 3)

0.9 (0.7, 1.1)

90 (80, 100)

Dropped

1

4.1

5

2

0.9

90

Final list

All

31

4.3 (3.3, 4.8)

4.5 (3, 5)

1.9 (1, 3)

0.7 (0.4, 1.1)

98 (80, 100)

Measure

After 1st review

All

133

3.8 (2.5, 4.8)

4.0 (2, 5)

2.3 (1, 4)

0.9 (0.4, 1.4)

92 (50, 100)

High consensus

55

4.2 (4.0, 4.8)

4.6 (4, 5)

1.9 (1, 2)

0.7 (0.5, 1.0)

99.8 (88, 100)

For confirmation

71

3.6 (3.0, 4.3)

3.6 (3, 5)

2.5 (1, 4)

0.9 (0.4, 1.4)

89 (63, 100)

Dropped

7

3.0 (2.5, 3.8)

2.9 (2, 4)

2.9 (2, 3)

1.1 (0.9, 1.3)

66 (50, 88)

After 2nd review

High consensus

63

4.2 (4.0, 4.8)

4.6 (4, 5)

1.9 (1, 2)

0.7 (0.5, 1.0)

99.8 (88, 100)

Low consensus

53

3.5 (3.0, 4.1)

3.5 (3, 5)

1.8 (0, 4)

0.7 (0.0, 1.2)

94 (75, 100)

Dropped

10

2.8 (2.6, 3.1)

2.9 (2, 3)

2.5 (2, 3)

0.8 (0.7, 1.1)

69 (63, 88)

Final list

All

116

3.9 (3.0, 4.8)

4.1 (3, 5)

1.9 (0, 4)

0.7 (0.0, 1.2)

97 (75, 100)

  1. aElements were rated in 5-point Likert scale, with 1 indicating the least relevant and 5 the most relevant
  2. bComponents and attributes were reviewed in the first and second rounds; example measures were reviewed in the second and third round