Fig. 1From: Cost-effectiveness analysis of N95 respirators and medical masks to protect healthcare workers in China from respiratory infectionsAverage costs per healthcare worker (HCW) in Beijing Trial 1 (2008/09) and Trial 2 (2009/10). The shaded sections within each bar represent different components of the average intervention and treatment costs per HCW for the 28 day period in each trial armBack to article page