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Table 1 Comparison of simple renal cysts and chronic kidney disease between study groups

From: Association of simple renal cysts and chronic kidney disease with large abdominal aortic aneurysm

Variable

AAA group

Control group

pa

With variable

n

Data available

n

With variable

n

Data available

n

CKD, all stagesb

29

97

8

100

<0.001

CKD stage 1/2/3/4/5/RTXc

5/9/11/1/2/1

97

1/4/3/0/0/0

100

0.002

Nephrolithiasis

2

97

7

98

0.170

SRC (both right and left kidney)d

72

97

57

100

0.016

SRC, right kidney only

58

97

46

100

0.064

1 – 4 SRC in right kidneyd

46

97

41

100

0.05

>5 SRC in right kidneyd

12

97

5

100

0.05

SRC, left kidney onlyd

60

97

33

100

<0.001

1 – 4 SRC in left kidneyd

48

97

29

100

<0.001

> 5 SRC in left kidneyd

12

97

4

100

<0.001

  1. aChi-square test
  2. bDefined as presence of ICD-10 code in medical records: N18.1 for CKD stage 1, N18.2 for CKD stage 2, N18.3 for CKD stage 3, N18.4 for CKD stage 4, N18.5 for CKD stage 5 or Z94.0 for renal transplantation.
  3. cDefined as presence of kidney stones (ICD-10: N20.0) on the CTA scans.
  4. dDefined as presence of simple renal cysts (ICD-10: Q61.9) on the CTA scans.
  5. CKD Chronic kidney disease; SRC Simple renal cyst; RTX Renal transplantation.