Statistical Profile — DUKE UNIVERSITY HOSPITAL
CCN 340030 | DURHAM, NC | 5 outlier flags
🛡️ Public data only — no PHI permitted on this instance.
1,048
Beds
$3.16B
Net Revenue
-4.5%
Op Margin
87.9%
Occupancy
5
Outlier Flags
Statistical Outliers (5)
Metrics where this hospital is >2 standard deviations from the national mean. Investigate in diligence — could signal operational issues or data quality problems.
- Beds: +5.0σ above national mean
- Net Patient Revenue: +6.3σ above national mean
- Operating Expenses: +6.3σ above national mean
- Gross Patient Revenue: +4.8σ above national mean
- Total Patient Days: +5.9σ above national mean
Statistical Profile — All Variables
Each metric compared to national (n=6,123) and NC (n=129) peers. Z-score shows standard deviations from national mean.
| Metric | Hospital | Nat'l Median | NC Median | Z-Score | Nat'l %ile | State %ile |
|---|---|---|---|---|---|---|
| Beds | 1,048 | 63 | 100 | +5.01σ | P100 ▲ | P98 ▲ |
| Net Patient Revenue | $3.16B | $59.7M | $103.3M | +6.29σ | P100 ▲ | P99 ▲ |
| Operating Expenses | $3.30B | $62.7M | $102.7M | +6.32σ | P100 ▲ | P99 ▲ |
| Net Income | $-142.4M | $-2.1M | $-1.9M | -0.90σ | P3 ▼ | P2 ▼ |
| Gross Patient Revenue | $10.06B | $186.6M | $385.8M | +4.81σ | P99 ▲ | P98 ▲ |
| Total Patient Days | 336,140 | 12,073 | 18,992 | +5.92σ | P100 ▲ | P98 ▲ |
| Medicare Day % | 20.0% | 30.9% | 27.3% | -0.70σ | P24 | P25 |
| Medicaid Day % | 6.1% | 5.1% | 5.2% | -0.27σ | P56 | P61 |
| Operating Margin | -4.5% | -4.8% | -2.0% | +0.10σ | P51 | P38 |
| Revenue per Bed | $3.0M | $1.2M | $1.4M | +0.79σ | P91 ▲ | P91 ▲ |
| Occupancy Rate | 87.9% | 53.7% | 58.8% | +1.42σ | P94 ▲ | P91 ▲ |
| Commercial Payer % | 73.9% | 61.2% | 67.0% | +0.72σ | P78 | P73 |
| Net-to-Gross Ratio | 31.4% | 33.3% | 29.5% | -0.34σ | P46 | P59 |
| Expense per Bed | $3.1M | $1.2M | $1.4M | +0.65σ | P91 ▲ | P92 ▲ |
| Revenue per Patient Day | 9,391 | 7,054 | 6,521 | -0.04σ | P63 | P75 |
| Payer Diversity Index | 0.410 | 0.473 | 0.466 | -0.19σ | P30 | P26 |
Multi-Variable Regression Residuals
For each key metric, the national regression model predicts a value. The residual shows how much this hospital over/under-performs after controlling for all other variables.
| Target | Model R² | Actual | Predicted | Residual |
|---|---|---|---|---|
| Net Patient Revenue | 74.0% | $3.16B | $2.67B | +1.90σ |
| Operating Margin | 2.1% | -0.0451 | -0.0232 | -0.12σ |
| Occupancy Rate | 44.3% | 0.8788 | 1.3000 | -2.31σ |
| Revenue Per Bed | 2.6% | $3.0M | $3.0M | -0.01σ |
| Net To Gross Ratio | 22.4% | 0.3138 | 0.3272 | -0.08σ |