Table 3.
CKD–specific ambulatory care sensitive condition hospitalizations by high-use status
| Encounter- and Patient-Level Characteristic | All, n=57,007 | Persistently High Use, n=947 | Episodic High Use, n=7010 | Nonhigh Use, n=49,050 |
|---|---|---|---|---|
| Encounter-level analysis | ||||
| Total no. of hospital encounters | 118,671 | 8913 | 31,796 | 77,962 |
| Total no. of ACSC encounters regardless of type (proportion of all hospital encounters) | 24,804 (20.9) | 2593 (29.1) | 8681 (27.3) | 13,530 (17.3) |
| Proportion of all ACSC encounters, n=24,804 | 100 | 10.5 | 35.0 | 54.5 |
| Cumulative length of stay of ACSC encounters, median (IQR) | 20 (9–48) | 47.5 (20–91) | 32 (15–66) | 16 (7–39) |
| Total no. of hospital days for ACSC encounters, proportion of total (%) | 830,841 (100) | 58,102 (7.0) | 244,987 (29.5) | 527,752 (63.5) |
| Heart failure encounters | 22,954 (19.3) | 2412 (27.1) | 8124 (25.6) | 12,418 (15.9) |
| Hyperkalemia encounters | 2517 (2.1) | 255 (2.9) | 796 (2.5) | 1466 (1.9) |
| Volume overload encounters | 419 (0.4) | 51 (0.6) | 133 (0.4) | 235 (0.3) |
| Malignant hypertension encounters | 52 (0.0) | 5 (0.1) | 10 (0.0) | 37 (0.1) |
| Patient-level analysis | ||||
| Proportion of patients with at least one ACSC hospitalization regardless of type | 14,131 (24.8) | 610 (64.4) | 3397 (48.5) | 10,124 (20.6) |
| Proportion of patients with an ACSC encounter related to heart failure | 12,904 (22.6) | 556 (58.7) | 3129 (44.6) | 9219 (18.8) |
| Proportion of patients with an ACSC encounter related to hyperkalemia | 2225 (3.9) | 180 (19.0) | 652 (9.3) | 1393 (2.8) |
| Proportion of patients with an ACSC encounter related to volume overload | 395 (0.7) | 44 (4.7) | 121 (1.7) | 230 (0.5) |
| Proportion of patients with an ACSC encounter related to malignant hypertension | 50 (0.1) | 5 (0.5) | 9 (0.1) | 36 (0.1) |
ACSC, ambulatory care sensitive condition; IQR, interquartile range.