Fact · Dictation software
238physicians
The UCLA ambient scribe trial assigned 238 outpatient physicians across 14 specialties to two AI scribes or to usual care.
Checked against its source on October 16, 2026
In the source's own words
“238 outpatient physicians, representing 14 specialties, were assigned 1:1:1”
Ambient AI Scribes in Clinical Practice: A Randomized Trial, Lukac PJ et al., NEJM AI, 2025, Methods.
Open the original (DOI 10.1056/aioa2501000)- What it measures
- Randomization was 1:1:1 to Microsoft DAX Copilot, to Nabla or to usual care, from November 4, 2024 to January 3, 2025, and was constrained on time-in-note, baseline burnout and clinic days.
- What it does not show
- One academic centre over two months. Results describe these two scribes in that setting, not all ambient tools.
Source
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