The Periodic Assessment of Trajectories of Housing, Health and Homelessness Study (PATHS) — a joint research initiative between the USC Dworak-Peck School of Social Work and UCLA Fielding School of Public Health, focusing on the lives and experiences of people experiencing homelessness (PEH) in LA County — features a representative sample of PEH who were unsheltered, with ongoing monthly survey tracking on housing, health, and well-being even if respondents move into housing or shelter.