Table 4. Changes of cases with anxiety after the treatments of STEC and EC alone.

		total cases	initial anxiety	# to non-anxiety	# to anxiety	final anxiety	Change %	ρ pre-post treatment	ρ between year within method	ρ between method within year
STEC	2020	38	29	1	3	31	6.89% #	.574	.001	.488*
	2019	58	32	17	0	15	-53.10%	.001		.638
EC alone	2020	42	29	0	7	36	24.1% #	.068	< .001 *	\
	2019	17	13	6	0	7	-46.2%	.037		\

#: a positive change means an increase in cases with anxiety

*: the ρ values were the results of Fisher’s Exact Test, other cells using chi-square tests.