Table 3.

Encounter-level descriptive information for emergency department visits for a CKD-related ambulatory care-sensitive condition (17,176 emergency department visits for 111,087 patients)

Encounter-level VariablesCKD Category
G3A, n=71,347G3B, n=28,020G4,
n=8653G5 (nondialysis), n=1305G5 (dialysis), n=1762
No. of ED visits for a CKD-related ACSCa668760133363465648
Person-time, person-yr177,23266,98619,57428084168
Unadjusted rate per 1000 person-yr (95% CI)38 (37 to 39)90 (88 to 92)172 (166 to 178)166 (151 to 181)155 (144 to 168)
ED visits for a CKD-related ACSC by discharge disposition,b %
 Admitted59.962.465.470.557.4
 Died0.50.40.40.21.1
 Other39.737.134.229.241.5
ED visits for a CKD-related ACSC by acuity level,b %
 Nonurgent4.84.84.21.51.4
 Semiurgent15.815.114.715.17.3
 Urgent43.743.044.044.943.5
 Emergency30.330.832.332.542.3
 Resuscitation1.61.82.03.23.5
 Unknown3.74.52.82.82.0
ED visits for a CKD-related ACSC by type of ACSC,a n (%)
 Heart failure5896 (88.2)5163 (85.9)2715 (80.7)309 (66.5)264 (40.7)
 Hyperkalemia809 (12.1)896 (14.9)645 (19.2)148 (31.8)316 (48.8)
 Volume overload39 (0.6)30 (0.5)62 (1.8)23 (4.9)109 (16.8)
 Malignant hypertension24 (0.4)8 (0.1)8 (0.2)1 (0.2)2 (0.3)
  • ED, emergency department; ACSC, ambulatory care-sensitive condition; 95% CI, 95% confidence interval.

  • a The number represents the number of days with at least one CKD-related ACSC ED visit of that type, and therefore, the total number of CKD-related ACSC ED visits does not equal the total across type of ACSC.

  • b Where there was more than one ED visit in a day, the one that was counted was the one rated with the highest acuity or the one with the most serious discharge disposition.