Evidence map›Paper›PMID 37264411›Full record

Observational studyInternational journal for equity in health2023

Water, Sanitation, and Hygiene (WaSH) insecurity in unhoused communities of Los Angeles, California.

Lourdes Johanna Avelar Portillo, Georgia L Kayser, Charlene Ko, Angelica Vasquez, Jimena Gonzalez, Diego Jose Avelar, Nayib Alvarenga, Meredith Franklin, Yao-Yi Chiang

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in International journal for equity in health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
21.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Housing Status and Cancer Screening in US Veterans.Journal of general internal medicine · 2025
    Article
  9. Article
  10. The Unhoused Burn Population: An Alarming Increase of Leaving Against Medical Advice.Journal of burn care & research : official publication of the American Burn Association · 2025
    Article
  11. "Frontiers in public health · 2025
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Heat Risk Perceptions and Coping Strategies of the Unhoused.International journal of environmental research and public health · 2024
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 2 countries.

Lourdes Johanna Avelar PortilloHerbert Wertheim School of Public Health and Human Longevity Science, University of California (UCSD), 9500 Gilman Drive, La Jolla, CA, 92093, USA. lavelarportillo@health.ucsd.edu.ORCID 0000-0001-7502-7273
Georgia L KayserHerbert Wertheim School of Public Health and Human Longevity Science, University of California (UCSD), 9500 Gilman Drive, La Jolla, CA, 92093, USA.
Charlene KoSpatial Sciences Institute, University of Southern California (USC), 3616 Trousdale Parkway, Los Angeles, CA, 90089, USA.
Angelica VasquezSpatial Sciences Institute, University of Southern California (USC), 3616 Trousdale Parkway, Los Angeles, CA, 90089, USA.
Jimena GonzalezSpatial Sciences Institute, University of Southern California (USC), 3616 Trousdale Parkway, Los Angeles, CA, 90089, USA.
Diego Jose AvelarSpatial Sciences Institute, University of Southern California (USC), 3616 Trousdale Parkway, Los Angeles, CA, 90089, USA.
Nayib AlvarengaSpatial Sciences Institute, University of Southern California (USC), 3616 Trousdale Parkway, Los Angeles, CA, 90089, USA.
Meredith FranklinDepartment of Statistical Sciences, University of Toronto, 700 University Ave., Toronto, ON, Canada.
Yao-Yi ChiangDepartment of Computer Science and Engineering, University of Minnesota, 200 Union St. SE, Minneapolis, MN, 55455, USA.
University of Southern California · USHuman Longevity (United States) · USUniversity of California, San Francisco · USUniversity of Minnesota · USUniversity of Toronto · CA

Funding

University of California Launching Future Leaders in Global Health Research Training ProgramD43TW009343 · FIC · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI CRAIG R COHEN, Sung-Jae Lee · 2017 to 2026
$14.7M
Pesticide exposures, mental health and endocrine disruption among children growing up near pesticide spray sites.K01ES031697 · NIEHS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KAYSER, GEORGIA L. · 2020 to 2023
$594k
FIC NIH HHS D43 TW009343NIEHS NIH HHS K01 ES031697NIEHS NIH HHS K01ES031697
6 · The paper itself

Abstract

backgroundAccess to water and sanitation is a basic human right; however, in many parts of the world, communities experience water, sanitation, and hygiene (WaSH) insecurity. While WaSH insecurity is prevalent in many low and middle-income countries, it is also a problem in high-income countries, like the United States, as is evident in vulnerable populations, including people experiencing homelessness. Limited knowledge exists about the coping strategies unhoused people use to access WaSH services. This study, therefore, examines WaSH access among unhoused communities in Los Angeles, California, a city with the second-highest count of unhoused people across the nation.

methodsWe conducted a cross-sectional study using a snowball sampling technique with 263 unhoused people living in Skid Row, Los Angeles. We calculated frequencies and used multivariable models to describe (1) how unhoused communities cope and gain access to WaSH services in different places, and (2) what individual-level factors contribute to unhoused people's ability to access WaSH services.

resultsOur findings reveal that access to WaSH services for unhoused communities in Los Angeles is most difficult at night. Reduced access to overnight sanitation resulted in 19% of the sample population using buckets inside their tents and 28% openly defecating in public spaces. Bottled water and public taps are the primary drinking water source, but 6% of the sample reported obtaining water from fire hydrants, and 50% of the population stores water for night use. Unhoused people also had limited access to water and soap for hand hygiene throughout the day, with 17% of the sample relying on hand sanitizer to clean their hands. Shower and laundry access were among the most limited services available, and reduced people's ability to maintain body hygiene practices and limited employment opportunities. Our regression models suggest that WaSH access is not homogenous among the unhoused. Community differences exist; the odds of having difficulty accessing sanitation services is two times greater for those living outside of Skid Row (Adj OR: 2.52; 95% CI: 1.08-6.37) and three times greater for people who have been unhoused for more than six years compared to people who have been unhoused for less than a year (Adj OR: 3.26; 95% CI: 1.36-8.07).

conclusionOverall, this study suggests a need for more permanent, 24-h access to WaSH services for unhoused communities living in Skid Row, including toilets, drinking water, water and soap for hand hygiene, showers, and laundry services.

Indexed as

HygieneIll-Housed PersonsSanitationWater InsecurityAdolescentAdultAgedCross-Sectional StudiesDrinking WaterFemaleHumansLos AngelesMaleMiddle AgedUrban PopulationWater SupplyDrinking WaterAccess disparitiesHomelessnessLos AngelesUnhoused communitiesUrban populationsWaSHWaSH accessWater insecurity

Identifiers

PMID37264411
PMCPMC10233557
OpenAlexW4378981785

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.