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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.