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Table 2 Summary of adequacy assessment of renal allograft biopsies

From: Percutaneous native renal biopsy adequacy: a successful interdepartmental quality improvement activity

Period

Total biopsies (n)

Adequate biopsies (n,%)

Suboptimal biopsies (n,%)

Inadequate biopsies (n,%)

Difference in adequacy (%)*

p value

1

20

15 (75%)

0 (0%)

5 (25%)

NA

NA

2

270

152 (56%)

81 (30%)

37 (14%)

−19% (4, 41)

= 0.16

3

49

34 (69%)

9 (18%)

6 (12%)

+13% (2, 28)

= 0.11

  1. *Change of percentage of adequacy in the period in question compared to the preceding period, i.e. comparing period 2 to period 1, and comparing period 3 to period 2.