Does LLM Assistance Improve Healthcare Delivery? An Evaluation Using On-site Physicians and Laboratory Tests

Jason Abaluck, Robert Pless, Nirmal Ravi, Anja Sautmann and Aaron Schwartz

No 34660, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We deployed large language model (LLM) decision support for health workers at two outpatient clinics in Nigeria. For each patient, health workers drafted care plans that were optionally revised after LLM feedback. We compared unassisted and assisted plans using blinded randomized assessments by on-site physicians who evaluated and treated the same patients, as well as results from laboratory tests for common conditions. Academic physicians performed blinded retrospective reviews of a subset of notes. In response to LLM feedback, health workers changed their prescribing for more than half of the patients and reported high satisfaction with the recommendations, and retrospective academic reviewers rated LLM-assisted plans more favorably. However, on-site physicians observed little to no improvement in diagnostic alignment or treatment decisions. Laboratory testing showed mixed effects of LLM-assistance, which removed negative tests for malaria but added them for urinary tract infection and anemia, with no significant increase in the detection rates for the tested conditions.

JEL-codes: I10 I15 I18 O15 (search for similar items in EconPapers)
Date: 2026-01
Note: DEV EH
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.nber.org/papers/w34660.pdf (application/pdf)
Access to the full text is generally limited to series subscribers, however if the top level domain of the client browser is in a developing country or transition economy free access is provided. More information about subscriptions and free access is available at http://www.nber.org/wwphelp.html. Free access is also available to older working papers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nbr:nberwo:34660

Ordering information: This working paper can be ordered from
http://www.nber.org/papers/w34660
The price is Paper copy available by mail.

Access Statistics for this paper

More papers in NBER Working Papers from National Bureau of Economic Research, Inc National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.. Contact information at EDIRC.
Bibliographic data for series maintained by ().