Fig. 2

Proportion of time-dependent variables (total patient days, device days, days with infection, days with device-associated infection; unstacked area plot), number of patients, and device utilization ratio (right y-axis) for corresponding device by the years for each HAI. a HA respiratory infection and mechanical ventilation. b HA urinary tract infection and urinary catheter. c HA bloodstream infection and central line. d HA ventriculitis and meningitis and EVD. Number of patients in the study in each year is presented in a table below each graph. HA - healthcare-associated; HAI - healthcare-associated infection; DA-HAI - device-associated HAI. Star (*) shows p-value > 0.05 in a linear regression analysis over years