. 2016 Oct 7;6(4):339–345. doi: 10.1093/jpids/piw054

Table 2.

Monthly Parenteral Antimicrobial Use, Normalized to Patient Census

Antimicrobial	Use (Mean [SD]) (DOT/1000)		Months of Post-ASP Observation	P Value^c
Antimicrobial	Pre-ASP^a	Post-ASP^b	Months of Post-ASP Observation	P Value^c
All	703 (42.1)	577 (45.6)	28	<.001
Antibiotics	639 (38.1)	527 (43.9)	22	<.001
Antifungals	35 (7.0)	31 (10.0)	22	.077
Antivirals	28 (6.0)	21 (4.0)	22	<.001

Abbreviations: ASP, antimicrobial stewardship program; DOT/1000, days of therapy per 1000 patient-days; SD, standard deviation.

^aThe pre-ASP period was from January 2009 to February 2012 (38 months).

^bThe post-ASP period began in March 2012, and the number of months observed varied according to parameter.

^cWilcoxon rank-sum test.