Table. LOS for Index Hospitalizations and Readmission Rates Among US Children.
| Reason for Index Hospitalization | No. of Children | Hospital Discharge Volume, Median (IQR)a | Index Hospitalization LOS, Median (IQR)b | Readmission Rate, Median (IQR), %b | Association Between LOS and Hospital Readmission | |
|---|---|---|---|---|---|---|
| β Coefficientc | P Value | |||||
| 15-d Unplanned Hospital Readmission | ||||||
| Asthma | 53 503 | 979 (604-1334) | 1.3 (1.2-1.4) | 1.6 (1.0-2.1) | −1.22 | .03 |
| Cellulitis and other bacterial skin infections | 24 992 | 468 (333-660) | 1.7 (1.5-1.8) | 2.3 (1.6-3.1) | −2.15 | .03 |
| Nephritis and nephrosis | 4107 | 80 (48-104) | 1.9 (1.6-2.2) | 9.3 (5.0-13.4) | −5.69 | .02 |
| 30-d Unplanned Hospital Readmission | ||||||
| Dorsal and lumbar spinal fusion | 3596 | 90 (34-128) | 3.5 (3.2-4.2) | 1.4 (0.1-2.8) | −1.06 | .03 |
| Cellulitis and other bacterial skin infections | 24 992 | 468 (333-660) | 1.6 (1.5-1.8) | 3.1 (2.1-4.3) | −2.47 | .03 |
| All newborns | 82 354 | 297 (182-640) | 2.0 (1.7-2.4) | 1.8 (0.1-3.0) | −0.67 | .04 |
| With hyperbilirubinemia | 22 999 | 200 (122-424) | 1.9 (1.6-2.5) | 3.2 (2.0-4.0) | −0.75 | .05 |
Abbreviations: APR-DRG, All-Patient Refined Diagnosis Related Group; IQR, interquartile range; LOS, length of stay.
a
Total hospital discharge volume of index hospital admissions for each APR-DRG shown.
b
Index hospitalization LOS and readmission rates were risk adjusted by the case-mix index (mean relative weight) for each APR-DRG.6
c
The β coefficient was the slope of the regression line for readmission rate vs adjusted LOS by hospital.