Less than 20% of doctors using it doesn’t say anything about how those 20% of doctors used it. The fact 80% of doctors didn’t use it says a great deal about what the majority of doctors think about how appropriate it is to use for patient communication.
So to be clear, less than 20% used what the AI generated directly. There’s no stats on whether the clinicians copy/pasted parts of it, rewrote the same info but in different words, or otherwise corrected what was presented. The vast majority of clinicians said it was useful. I’d recommend checking out the open access article, it goes into a lot of this detail. I think they did a great job in terms of making sure it was a useful product before even piloting it. They also go into a lot of detail on the ethical framework they were using to evaluate how useful and ethical it was.