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Table 1 Estimated cost savings and expenses associated with the AMS program implemented at the four HMG medical facilities between 2016 and 2019

From: The impact of antimicrobial stewardship program implementation at four tertiary private hospitals: results of a five-years pre-post analysis

year Total antimicrobial expenditures (S.R.) Patient-Days ARPD (S.R.)a Actual savings and expenses compared with 2015 (S.R.)b
2015 11,502,287 173,297 66.37  
2016 8,229,378 185,958 44.25 4,113,261
2017 9,163,568 132,150 69.34 - 392,342
2018 7,601,056 147,269 51.61 2,173,668
2019 5,361,239 79,075 67.79 - 112,774
  1. aARPD = antimicrobial riyals per patient-day
  2. bCalculated by subtracting the year’s ARPD from 2015’s ARPD and multiplying the result by the number of patient-days for the year. Total actual savings and expenses for 2016–2019, S.R. 6,286,929 (high savings) and S.R. 505,115 (low expenses)