Table 3.

Test of within-group differences in symptom frequency between assessments.

	Intervention		Control
	V	p-value	V	p-value
Painful pressure in ear	60	0.078	32.5	0.103
Blocked nose	510	0.000	39	0.000
Runny nose	264	0.000	203	0.217
Sneezing	198	0.010	170.5	0.018
Watery eyes	27	0.182	40	0.115
Altered sense of smell or taste	442.5	0.084	175.5	0.247

Note. V, V statistic from Wilcoxon's signed-rank test.