The Mental Health Index (MHI) ranking of 1-5 is a comparison of each locale to all others within the selected comparison region on your site (all zip codes, census tracts, or counties). Within a comparison area, the ranking for the zip code with the lowest index value will be 1 (the index values range from 0 to 100).
If your site region is composed of a single county, the ranking will be to all other zip codes and census tracts in your county. If you have multiple counties within your site region, you can change the selection in the comparison drop-down menu to view the ranking within each county separately or across your entire site region.
Zip codes and census tracts are ranked using natural breaks classification, which groups the zip codes into clusters based on similar index values. This method minimizes the variance within a rank, and maximizes the variance between ranks.
The MHI is calculated from indicator data in the following topics: Health Care Access & Quality, Health Status, Transportation, Employment, and Social Environment. The indicators, individually and combined as an index, are highly correlated with self-reported poor mental health.
Claritas Pop-Facts®, Claritas Consumer Profiles, American Community Survey, and CDC PLACES estimates are used for the indicators included in the index.