Fig. 1From: Noise exposure during prehospital emergency physicians work on Mobile Emergency Care Units and Helicopter Emergency Medical ServicesCoefficients for Noise exposure levels from the linear mixed model with “in-hospital” as reference. Error bars indicating 95% confidence interval. All exposure groups were significant larger than in-hospital controls. The horizontal bar at 80 dB represents the acceptable threshold for occupational noise as defined in the E.U. Regulative for NoiseBack to article page