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Table 4 The effect of pyelonephritis on combined endpoint graft function and mortality

From: Risk and outcome of pyelonephritis among renal transplant recipients

Time at riska

No. of Pyelonephritis

IRb (95 % CI)

IRRe (95 % CI)

p-value*

+ 0 daysc

0

7.54 (7.10–8.01)

1 (reference)

 
 

1

9.01 (7.52–10.8)

1.22 (1.01–1.48)

.043

+ 90 daysd

0

6.41 (6.00–6.85)

1 (reference)

 
 

1

8.97 (7.49–10.7)

1.45 (1.19–1.77)

≤.001

  1. Abbreviations: No. number, CI confidence interval, IR incidence rate, IRR incidence rate ratio
  2. *P value corresponding to the IRR
  3. atime of risk = posttransplant time
  4. bIR per 100 person-years
  5. cTime at risk begins from the day the person is diagnosed with pyelonephritis
  6. dThe first 90 days post-transplantation are sensored
  7. eAdjusted for sex and age