California Code, Welfare and Institutions Code - WIC § 9009

(a) “Elder Economic Security Standard Index” means an index, available on the Internet, that quantifies the costs in the private market for meeting the basic needs of elders, including, but not limited to, the costs of essential household items, food, health care, shelter, transportation, and utilities.

(b) The Elder Economic Security Standard Index is updated biennially by the University of California, Los Angeles Center for Health Policy Research, using publicly available data sources on the costs to live in each county of the state.