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Table 2 Comparison of fortnightly and 3-monthly BK viral load screening strategies

From: Optimal use of plasma and urine BK viral loads for screening and predicting BK nephropathy

Characteristic

Fortnightly (n = 72)

3-monthly (n = 78)

p-value

First positive urine viral load

3.27 (3.03–4.25)

6.71 (4.90–8.23)

<0.001

First positive plasma viral load

3.18 (2.88–3.78)

3.30 (2.89–4.19)

0.603

Peak urinary viral load

7.96 (4.54–9.70)

7.88 (5.76–9.52)

0.911

Peak plasma viral load

3.85 (3.20–5.28)

4.23 (3.26–5.11)

0.965

Time to first positive urine viral load

63 (28–100)

97 (90–131)

0.001

Time to first positive plasma viral load

80 (52–155)

95 (73–120)

0.536

eGFR at 12 months

47.0 (34.1–57.9)

44.9 (35.8–60.0)

0.870

BK nephropathy

4 (5.55)

8 (10.26)

0.372

  1. Results are median (interquartile range), except BK nephropathy which is number (%). Viral loads are log10 copies/mL. Viral load data represent those cases with a detectable viral load where the compartment was used for screening