Table 3.
Adjusted In-Hospital Mortality, Intensive Care Unit (ICU) Admission, Length of Stay, and Inpatient Costs Stratified by Emergency Department (ED) Revisit Statusa
| Hospital Admission Without ED Revisit | ED Revisit |
|||||
|---|---|---|---|---|---|---|
| ED Return Admissionb | Differencec | Readmissiond | Differencec | |||
| In-hospital mortality, % (95% CI) | 2.48 (2.38 to 2.58) | 1.85 (1.71 to 2.00) | −0.63 (−0.74 to 0.51) | 3.43 (3.25 to 3.61) | 0.95 (0.82 to 1.09) | |
| Within 7 d | ICU admission, % (95% CI) | 29.0 (26.4 to 31.6) | 23.3 (21.0 to 25.6) | −5.7 (−6.4 to 5.0) | 30.4 (27.7 to 33.2) | 1.4 (0.9 to 2.0) |
| Length of stay, mean (range), d | 4.97 (4.86 to 5.08) | 5.16 (5.03 to 5.28) | 0.19 (0.13 to 0.25) | 5.70 (5.57 to 5.85) | 0.74 (0.67 to 0.81) | |
| Cost, mean (range), $ | 10 799 (10 409 to 11 188) | 10 169 (9800 to 10 538) | −629 (−781 to −479) | 11051 (10 564 to 11 538) | 252 (63 to 442) | |
| In-hospital mortality, % (95% CI) | 2.58 (2.48 to 2.69) | 1.92 (1.80 to 2.04) | −0.66 (−0.76 to −0.58) | 3.42 (3.25 to 3.60) | 0.84 (0.72 to 0.96) | |
| Within 14 d | ICU admission, % (95% CI) | 29.0 (26.4 to 31.6) | 24.0 (21.7 to 26.2) | −5.0 (−5.6 to 4.4) | 30.3 (27.5 to 33.0) | 1.3 (0.7 to 1.8) |
| Length of stay, mean (range), d | 4.94 (4.83 to 5.20) | 5.09 (4.97 to 5.20) | 0.15 (0.10 to 0.20) | 5.65 (5.51 to 5.79) | 0.71 (0.66 to 0.77) | |
| Cost, mean (range), $ | 10 748 (10 363 to 11132) | 10 119 (9756 to 10482) | −629 (−752 to 505) | 11 004 (10 530 to 11 477) | 251 (87 to 416) | |
| In-hospital mortality, % (95% CI) | 2.75 (2.64 to 2.86) | 1.94 (1.83 to 2.05) | −0.81 (−0.90 to 0.72) | 3.26 (3.10 to 3.41) | 0.51 (0.41 to 0.60) | |
| Within 30 d | ICU admission, % (95% CI) | 29.0 (26.4 to 31.6) | 24.7 (22.4 to 27.0) | −4.3 (−4.8 to 3.8) | 29.8 (27.1 to 32.5) | 0.8 (0.3 to 1.3) |
| Length of stay, mean (range), d | 4.90 (4.79 to 5.01) | 5.00 (4.89 to 5.11) | 0.10 (0.05 to 0.14) | 5.56 (5.43 to 5.69) | 0.66 (0.61 to 0.71) | |
| Cost, mean (range), $ | 10 706 (10 326 to 11 086) | 10 093 (9732 to 10 454) | −614 (−731 to 496) | 10 880 (10 428 to 11 332) | 174 (26 to 322) | |
a
Models were adjusted for age, sex, race, Elixhauser comorbidities, and primary payer. The predicted outcomes are from regression models.
b
Defined as patients who were discharged from the ED at the index visit and were hospitalized during the return visit to the ED.
c
Relative to the reference group (hospital admissions during index ED visit without ED revisit).
d
Defined as patients who were discharged from the hospital, made another visit to the ED, and were rehospitalized.