Many state boards of health assume that CRNAs are more likely to have higher rates of mortality and complication than anesthesiologists and therefore require them to work under the supervision of a doctor. That assumption turns out to be unfounded:
A multivariate analysis showed that nurse anesthetists had a lower incidence of mortality and complications than did doctors practicing alone.
Wow. Looks like the opposite is true. Perhaps now those states will allow CRNAs to practice to the full extent their licensure allows.
(Via Med Page Today. The original is behind a Health Affairs paywall.)