Table 5

Change in serum creatinine concentration from the baseline in hospitalised patients with and without CKD where ICD-10 code N17× did and did not indicate AKI (referred to as code positive and code negative)*

Patients with CKDPatients without CKD
Absolute change (µmol/l)Relative change (%)†Absolute change (µmol/l)Relative change (%)†
CodeNMedian (IQR)NMedian(IQR)
+308108 (48 to 215)53 (20 to 104)171595 (43 to 197)72 (29 to 161)
132416 (−8 to 51)9 (−4 to 26)35 2196 (−4 to 19)6 (−5 to 22)
  • Code positive and code negative patients were significantly different (all p-values <0.001).

  • Relative changes in patients with and without CKD were statistically different (p<0.0001).

  • *The ICD-10 N17× coding algorithm considered is all diagnoses.

  • †((peak serum creatinine—baseline serum creatinine)/baseline serum creatinine)).

  • To convert serum creatinine from μmol/l to mg/dl divide by 88.4.

  • CKD, chronic kidney disease; ICD-10, International Classification of Diseases, tenth revision; N, number; +, code positive; −, code negative; n/a, not applicable.