Fig. 3

Correlation of personnel turnover and CLABSI incidence on hospital level. a Correlation of CLABSI incidence and turnover of overall nursing personnel (black line; r = 0.467, P = 0.022) and physicians (red line; r =  −0.05, P = 0.787), respectively; b correlation of CLABSI incidence and turnover of assistive nursing personnel (brown line; r = 0.32, P = 0.122), licensed practical nurses (green line; r = 0.26, P = 0.038), and registered nurses (blue line; r = 0.471, P = 0.021), respectively; The x-axis indicates employee turnover (number of leaving HCWs divided by the number of currently employed HCWs of the corresponding profession). The y-axis displays the incidence rate of CLABSI. Lines were generated using linear regression