Table 1.

Proportion of site-specific requests for enteric test ordering across University of Pennsylvania Health System facilities (2019–2020)

Site	Proportion of requests (%)a,b
	2019	2020
1	58.7	62.4**
2	16.9	16.8
3	12.3	11.2
4	7.8	5.2*
5	2.0	1.5
6	1.3	1.1
7	0.6	1.1***
8	0.2	0.4
9	0.2	0.07
10	0.05	0.0
11	0.03	0.0

^aProportions of requests were calculated using the tests ordered by site and total tests ordered across all University of Pennsylvania Health System facilities each year. Total tests ordered in 2019 (n = 3842) and 2020 (n = 2896)

^bDifferences in proportion of requests between 2019 and 2020 were calculated using the proportion of requests (%) at each site and sum of tests ordered annually across all sites. P values were computed using the chi-square test of homogeneity (test of two proportions) MedCalc Version 19.8

*P < 0.01, **P < 0.0001, ***P < 0.05