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

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

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

^aARPD = antimicrobial riyals per patient-day
^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)

ISSN: 2047-2994