Table 2.

Encounter-level descriptive information for all emergency department visits in the CKD cohort (294,113 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 visits162,80683,38431,461624510,217
No. of person-yr177,23266,98619,57428084168
Unadjusted rate per 1000 person-yr (95% CI)919 (914 to 923)1245 (1236 to 1253)1607 (1590 to 1625)2224 (2169 to 2280)2451 (2404 to 2499)
ED visits by discharge disposition,a %
 Admitted23.929.835.133.033.0
 Died0.30.30.40.20.4
 Other75.869.864.466.866.5
ED visits by acuity level,a %
 Nonurgent15.914.713.416.810.9
 Semiurgent28.427.425.624.022.1
 Urgent34.936.438.037.438.2
 Emergency13.714.716.415.822.4
 Resuscitation0.60.81.00.81.4
 Unknown6.46.05.65.25.0
  • ED, emergency department; 95% CI, 95% confidence interval.

  • a Where there was more 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.