Table 2.

Incidence of AKI overall and among patients with previous CKD: Medicare patients discharged alive from hospitals, 2000

CharacteristicAKIAKI and CKD
AKINo AKIAKI and CKDAKI OnlyCKD OnlyNo AKI or CKD
n7197226,6062467473025,653200,953
Age (yr; mean)80.179.279.980.279.379.1
Men (%)47.638.552.045.347.137.4
Race (%)
    white83.689.281.884.586.789.5
    black12.57.513.911.79.57.3
    other4.03.34.33.83.83.2
Baseline condition (%)
    diabetes41.626.850.337.037.725.4
    hypertension78.064.584.974.377.362.9
    heart disease84.168.991.180.583.067.1
Mortality
    rate (%)57.728.264.354.337.926.9
    HR (95% CI)a2.38 (2.31 to 2.46)1.003.24 (3.08 to 3.40)2.48 (2.38 to 2.58)1.45 (1.42 to 1.48)1.00
  • a Obtained using Cox proportional models with adjustment for age, gender, race, diabetes, and heart disease (CKD was included in the model for AKI).