Characteristics of Good Indices
Some characteristics that STTI has found to represent a good index would contain some, if not all, of the following:
- Public involvement and wide ownership of the selection of the measures included and the weighting, if any for the indicators;
- Clear explanation of how factors are measured or calculated and any weighting that may be used;
- Explanation of the goals of the index and why certain indicators are included (and possibly why others are not);
- Examination of trends in the measures over time instead of one-time snapshots;
- Public dissemination of results;
- Specific recommendations for action from the study, including identification of responsible parties when appropriate;
- Follow-up assessment of improvement (every 2-3 years); and,
- Proper citation of sources.