Table 3.

Test marker expression by PyVN disease class (at time of index biopsy).

Test Marker (At Time of Index Biopsy)	Statistic	PyVN Disease Class (In Index Biopsy)
		Class 1	Class 2	Class 3	p-Value *
PyV Haufen	Median	416.5	1411	7881	<0.001
(number/mL urine)	IQR	282–451	903–3104	6732–9030
	N	32	39	2
BKPy-viremia	Median	1.39	2.74	11.83	0.098
( ×104 viral copies/mL)	IQR	0.31–3.48	0.59–10.02	2.52–21.13
	N	27	35	2
BKPy-viruria	Median	0.82	5.70	3.84	0.086
( ×108 viral copies/mL)	IQR	0.28–14.90	0.80–20.70	3.60–4.08
	N	29	38	2

* Kruskal-Wallis test for Class 1 versus Class 2 (Class 3 excluded due to small case number) PyVN disease classes defined according to the Banff classification [16,17,18].