Fig. 2.
Unadjusted and adjusted inpatient length of stay, stratified by composition of the anesthesia care team. The figure presents unadjusted and adjusted inpatient length of stay, separately for patients receiving care from anesthesia care team with nurse anesthetists (NA; blue) and care teams with anesthesiologist assistants (AA; orange). “Adjusted” refers to analyses that adjust for differences in surgery types, the patient characteristics listed in table 1, and hospital characteristics, using the approach described under Materials and Methods. The error bars represent 95% CIs and were calculated using standard errors that were clustered at the hospital level.