The 6-question TSI is being included in this statewide assessment, led by Impact Consulting in partnership with the New Hampshire State Commission on Aging.
2026 wave of the Health and Retirement Study
The 6-question Transportation Security Index is being included on a Health and Retirement Study (HRS) transportation module that will be fielded in 2026. The University of Michigan’s HRS is a longitudinal panel study that surveys a representative sample of roughly 20,000 people over the age of 50 in the United States every two years, collecting data on such topics as wealth, health, family connections, work, and more.
The international standard for identifying health measurements, observations, and documents recognizes TSI.
Following recommendation’s from the Gravity Project, in 2025 The TSI-16 and the TSI-6 were both encoded in Regenstrief’s LOINC (Logical Observation Identifiers Names and Codes). LOINC provides organizations working in healthcare settings with a universal set of codes related to measurement that enables different systems to exchange consistent information.
UC Davis Health to Study How Transportation Impacts Dialysis Patient Outcomes
Dialysis treatment typically requires patients to travel to treatment multiple times a week. Health researchers at UC Davis are using the Transportation Security Index to understand how transportation insecurity and different modes of transportation impact dialysis patients’ ability to consistently attend dialysis appointments and how such attendance impacts actual dialysis patient health outcomes.