Fig. 1. Correlation between anesthesiologists personnel costs and anesthesia time per anesthesia subspecialty. Physician personnel costs include personnel costs occurring during attendance in the operating room and during the preoperative visit. Displayed are the average physician personnel costs in Euros per minute calculated separately for each subspecialty with the 95% confidence interval for each subspecialty. Anesthesia time is the average anesthesia time for each subspecialty in minutes. Also displayed is the best-fit regression line ( thick line ; adjusted R 2= 0.75) with its 95% confidence intervals ( thin lines ). ENT = ear, nose, and throat surgery; OB/GYN = obstetrics and gynecology. Further details are provided in the Materials and Methods.
