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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