. Author manuscript; available in PMC: 2019 Oct 28.

Published in final edited form as: J Microbiol Methods. 2016 Aug 18;130:6–13. doi: 10.1016/j.mimet.2016.08.013

Table 5.

Laboratory Performance Comparisons for Significant Difference

Soil Type	Percent of Positive Control Targeted	Day	Laboratory Comparisons
			Within		Between
			USGS	EPA	Between
Loam	5%	1	NSD^a	NSD	0.003^b
	5%	2	NSD	NSD	0.026
	10%	1	NSD	NSD	NSD
	10%	2	NSD	<0.001	<0.001
	25%	1	NSD	0.006	0.002
	25%	2	NSD	NSD	NSD
	50%	1	NSD	NSD	<0.001
	50%	2	NSD	NSD	<0.001
Sand	5% (A)	1	NSD	NSD	NSD
	5% (A)	2	0.027	NSD	0.005
	5% (B)	1	NSD	NSD	NSD
	5% (B)	2	NSD	NSD	NSD
	10% (A)	1	0.006	NSD	0.014
	10% (A)	2	<0.001	NSD	0.002
	10% (B)	1	0.005	NSD	NSD
	10% (B)	2	NSD	NSD	NSD
	25%	1	NSD	NSD	0.011
	25%	2	NSD	NSD	NSD
	50%	1	0.004	NSD	0.002
	50%	2	NSD	NSD	NSD

NSD: No statistically significant difference between the respective means.

p-values from the ANOVA table.