Table 3 Expert panel rating of the importance of each characteristic to assess either the data quality, operation or practical ability of an injury surveillance system (modified-Delphi round 2)
From: The development of an evaluation framework for injury surveillance systems
Characteristic | Mean1 (n = 7) | Median2 (n = 7) | Standard Deviation (n = 7) | Interquartile Range (n = 7) | Consensus3 |
|---|---|---|---|---|---|
Data quality characteristics | Â | Â | Â | Â | Â |
Data completeness | 6.3 | 6.0 | 0.8 | 1 | High |
Sensitivity | 6.1 | 6.0 | 0.9 | 2 | High |
Specificity | 5.9 | 6.0 | 0.9 | 2 | High |
Positive predictive value | 5.9 | 6.0 | 0.9 | 2 | High |
Representativeness | 6.4 | 6.0 | 0.5 | 1 | High |
Positive likelihood ratio | 5.0 | 5.0 | 1.9 | 4 | Moderate |
Operational characteristics | Â | Â | Â | Â | Â |
Clear purpose and objective(s) | 6.6 | 7.0 | 0.5 | 1 | High |
Data collection process | 6.3 | 6.0 | 0.5 | 1 | High |
Clear case definition | 6.7 | 7.0 | 0.8 | 0 | High |
Legislative requirement for collection of data | 4.4 | 5.0 | 2.2 | 3 | Low |
Type of data collected is adequate for injury surveillance | 5.6 | 6.0 | 2.5 | 1 | Low |
Simplicity | 5.4 | 6.0 | 0.8 | 1 | High |
Timeliness | 6.1 | 6.0 | 0.4 | 0 | High |
Flexibility | 5.3 | 5.0 | 0.8 | 1 | High |
Quality control measures | 6.6 | 7.0 | 0.5 | 1 | High |
Data confidentiality | 6.3 | 6.0 | 0.8 | 1 | High |
Individual privacy | 6.3 | 6.0 | 0.5 | 1 | High |
System security | 6.9 | 7.0 | 0.4 | 0 | High |
Use of uniform classification systems | 6.3 | 6.0 | 0.5 | 1 | High |
System can be integrated with other data collections | 5.6 | 6.0 | 1.0 | 1 | High |
Practical characteristics | Â | Â | Â | Â | Â |
Data accessibility | 6.4 | 7.0 | 0.8 | 1 | High |
Potential for data linkage | 5.6 | 6.0 | 1.1 | 2 | Moderate |
Potential for geocoding | 5.0 | 5.0 | 0.8 | 2 | High |
Routine data analysis | 6.4 | 6.0 | 0.5 | 1 | High |
Guidance material for data interpretation | 6.1 | 6.0 | 0.7 | 1 | High |
Routine dissemination of information | 6.1 | 6.0 | 1.1 | 1 | Moderate |
Acceptability | 6.3 | 6.0 | 0.5 | 1 | High |
Usefulness | 6.7 | 7.0 | 0.5 | 1 | High |