Statistical Profile — TEWKSBURY HOSPITAL
CCN 222003 | MIDDLESEX, MA | 2 outlier flags
🛡️ Public data only — no PHI permitted on this instance.
540
Beds
—
Net Revenue
nan%
Op Margin
61.2%
Occupancy
2
Outlier Flags
Statistical Outliers (2)
Metrics where this hospital is >2 standard deviations from the national mean. Investigate in diligence — could signal operational issues or data quality problems.
- Beds: +2.2σ above national mean
- Medicaid Day %: +4.5σ above national mean
Statistical Profile — All Variables
Each metric compared to national (n=6,123) and MA (n=99) peers. Z-score shows standard deviations from national mean.
| Metric | Hospital | Nat'l Median | MA Median | Z-Score | Nat'l %ile | State %ile |
|---|---|---|---|---|---|---|
| Beds | 540 | 63 | 125 | +2.23σ | P96 ▲ | P92 ▲ |
| Operating Expenses | $87.3M | $62.7M | $150.2M | -0.29σ | P57 | P38 |
| Net Income | $-87.3M | $-2.1M | $-15.4M | -0.52σ | P6 ▼ | P18 |
| Total Patient Days | 120,721 | 12,073 | 32,860 | +1.73σ | P95 ▲ | P89 |
| Medicare Day % | 0.0% | 30.9% | 33.5% | -1.70σ | P0 ▼ | P0 ▼ |
| Medicaid Day % | 66.2% | 5.1% | 9.4% | +4.49σ | P99 ▲ | P97 ▲ |
| Occupancy Rate | 61.2% | 53.7% | 70.6% | +0.37σ | P60 | P31 |
| Commercial Payer % | 33.8% | 61.2% | 53.7% | -1.24σ | P12 | P12 |
| Expense per Bed | 161,684 | $1.2M | $1.5M | -0.58σ | P2 ▼ | P0 ▼ |
| Payer Diversity Index | 0.447 | 0.473 | 0.530 | +0.07σ | P40 | P24 |
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 |
|---|---|---|---|---|
| Occupancy Rate | 44.3% | 0.6125 | 0.4583 | +0.85σ |