Table 3.
Impact of additional comorbidity data on prediction of 30-day mortality in the validation cohorta (n = 12,725)
| Modified Acute Organ Failure Score | ||||||
|---|---|---|---|---|---|---|
| Comorbidity Data Sources | CCI Median (IQR)a |
c-statistic (95% CI) |
COPS2 Median (IQR)a |
c-statistic (95% CI) |
Elixhauser Median (IQR)a |
c-statistic (95% CI) |
| Current hospital visitb | 1 (0,3) | 0.720 (0.708, 0.732) | 46 (20,71) | 0.737 (0.725, 0.748) | 3 (2,4) | 0.745 (0.734, 0.756) |
| + 1-year lookback at hospital visitsb,c | 2, (1,3) | 0.726 (0.714, 0.738) | 56 (28,90) | 0.741 (0.729, 0.752) | 3, (2,5) | 0.742 (0.730, 0.753) |
| + 1-year lookback at hospitalb,c + outpatient visits | 4 (2,6) | 0.728 (0.717, 0740) | 89 (49,140) | 0.739 (0.728, 750) | 4 (6,9) | 0.738 (0.727. 0.749) |
a
Excluded admissions (29.9%) without associated provider-based inpatient claims in the Medicare Carrier file
b
Included only comorbidities designated as present on admission
c
16,807 (96.3%) of patients had no previous hospital visits containing an ICU visit in the prior year
IQR, interquartile range; CI confidence interval; CCI, Charlson Comorbidity Index; COPS2 COmorbidity Point Score 2