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 Variables | CKD Category | ||||
|---|---|---|---|---|---|
| G3A, n=71,347 | G3B, n=28,020 | G4, n=8653 | G5 (Nondialysis), n=1305 | G5 (Dialysis), n=1762 | |
| No. of ED visits | 162,806 | 83,384 | 31,461 | 6245 | 10,217 |
| No. of person-yr | 177,232 | 66,986 | 19,574 | 2808 | 4168 |
| 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 % | |||||
| Admitted | 23.9 | 29.8 | 35.1 | 33.0 | 33.0 |
| Died | 0.3 | 0.3 | 0.4 | 0.2 | 0.4 |
| Other | 75.8 | 69.8 | 64.4 | 66.8 | 66.5 |
| ED visits by acuity level,a % | |||||
| Nonurgent | 15.9 | 14.7 | 13.4 | 16.8 | 10.9 |
| Semiurgent | 28.4 | 27.4 | 25.6 | 24.0 | 22.1 |
| Urgent | 34.9 | 36.4 | 38.0 | 37.4 | 38.2 |
| Emergency | 13.7 | 14.7 | 16.4 | 15.8 | 22.4 |
| Resuscitation | 0.6 | 0.8 | 1.0 | 0.8 | 1.4 |
| Unknown | 6.4 | 6.0 | 5.6 | 5.2 | 5.0 |
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.