| All patients | Least Disadvantaged | Middle 45% Disadvantaged | Top 5% Disadvantaged | p-value |
---|---|---|---|---|---|
Demographics | N= 1,915,039 | n=958,196 | n=865,655 | n=91,188 | Â |
Age (mean, SD) | 57.7, 17.1 | 58.5, 17.5 | 57.2, 16.8 | 53.7, 16.1 | <0.001 |
Age (N, %) | Â | Â | Â | Â | <0.001 |
 18-44 | 421,194, 22.0% | 203,676, 21.3% | 192,651, 22.3% | 24,867, 27.3% |  |
 45-64 | 802,649, 41.9% | 385,388, 40.2% | 373,659, 43.1% | 43,602, 47.8% |  |
 65+ | 691,196, 36.1% | 369,132, 38.5% | 299,345, 34.6% | 22,719, 24.9% |  |
Female (N, %) | 987,148, 51.6% | 481,688, 50.3% | 457,694, 52.9% | 47,766, 52.4% | <0.001 |
Primary Payer (N, %) | Â | Â | Â | Â | <0.001 |
 Medicare | 867,429, 45.3% | 430,697, 45.0% | 401,793, 46.4% | 34,939, 38.3% |  |
 Medicaid | 341,919, 17.9% | 156,762, 16.4% | 154,258, 17.8% | 30,899, 33.9% |  |
 Private | 460,920, 24.1% | 270,892, 28.3% | 177,315, 20.5% | 12,713, 13.9% |  |
 Self-Pay | 140,339, 7.3% | 56,227, 5.9% | 76,614, 8.9% | 7,498, 8.2% |  |
 No Charge | 30,713, 1.6% | 10,220, 1.1% | 18,750, 2.2% | 1,743, 1.9% |  |
  Other | 73,719, 3.9% | 33,398, 3.5% | 36,925, 4.3% | 3,396, 3.7% |  |
Clinical Characteristics | |||||
Length of Stay, days (mean, SD) | 4.8, 5.1 | 4.8, 5.0 | 4.7, 5.0 | 5.2, 6.3 | <0.001 |
Admission Type (N, %) | Â | Â | Â | Â | <0.001 |
 Emergency | 1,439,740, 75.2% | 720,846, 75.3% | 646,159, 74.7% | 72,735, 79.8% |  |
 Urgent | 152,640, 8.0% | 68,358, 7.1% | 79,382, 9.2% | 4,900, 5.4% |  |
 Elective | 311,958, 16.3% | 164,786, 17.2% | 134,218, 15.5% | 12,954, 14.21 |  |
 Trauma Center | 10,281, 0.5% | 3,954, 0.4% | 5,757, 0.7% | 570, 0.6% |  |
Surgical admission (N, %) | 958,196, 50% | 274,237, 28.62% | 233,221, 26.9% | 21,163, 23.21% | <0.001 |
Elixhauser comorbidity readmission risk score (mean, SD) | 12.5, 11.7 | 11.9, 11.5 | 13.1, 11.9 | 14.5, 12.5 | <0.001 |