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. Author manuscript; available in PMC: 2015 Jul 19.

Published in final edited form as: JAMA Pediatr. 2015 Jun 1;169(6):583–591. doi: 10.1001/jamapediatrics.2015.54

Table 3.

Comparison of Acute Kidney Injury (AKI) Stage 2 or Worse by CysC-AKI Staging vs SCr-AKI Staging

SCr-AKI Stage 2 Staging	CysC-AKI Stage 2 Staging
SCr-AKI Stage 2 Staging	No AKI or Stage 1	Stage 2 or 3	Total
No AKI or stage 1	240^a	3	243
Stage 2 or 3	12	32^a	44
Total	252	35	287^b

Abbreviations: CysC-AKI, cystatin C–defined AKI; SCr-AKI, serum creatinine–defined AKI.

^a

Patients for whom there is agreement in AKI staging between the 2 definitions.

^b

κ Statistic (SE) for AKI stage 2 or worse classification is 0.78 (0.05) (P < .001).