a decreasing trendP < .001
The rate of HAIs (from 31.83 per 1000 patient-days in 2012 to 9.72 per 1000 patient-days in 2019) and the adjusted rate of HAIs (from 9.07 per 1000 patient-days in 2012 to 2.47 per 1000 patient-days in 2019) all showed a decreasing trend year-on-year from 2012 to 2019 ( P < .001; Table 1 ). 3.2.