Table 2.

Chart review: International Classification of Diseases, Ninth Revision, Clinical Modification nonoverlapping strata and weights within the Atherosclerosis Risk in Communities study population

StratumICD-9-CM DescriptionReviewed (n)Adjudicated AKIcr (n)Total (n)Weight
1AKI only322968621.4
2AKI+CKD353354715.6
3AKI-D2221311.4
4AKI-D+CKD5854861.5
5CKD only6624292744.3
6CKD-Da1513510416.9
7Dialysis onlya138571.8
8Transplant62325.3
9CVD only1051715,416146.8
10None of the above581013,356230.3
 Total546b23334,179
  • AKIcr, AKI by the creatinine-based criteria; AKI-D, AKI with receipt of dialysis codes; CKD-D, CKD with receipt of dialysis codes; CVD, cardiovascular disease code only.

  • a Combined weight: separate weights were used for first and all other hospitalizations.

  • b Out of 655 requested.