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Descriptive Statistics—Efficiency Scores (Output-Based Data Envelopment Analysis [DEA]) (N=1,371)
| Score | Mean | SD | Minimum | Maximum |
|---|---|---|---|---|
| Constant returns to scale (CRS) efficiency | 1.35 | 0.02 | 1.00 | 2.43 |
| Variable returns to scale (VRS) efficiency | 1.09 | 0.12 | 1.00 | 2.28 |
| Scale efficiency | 1.24 | 0.21 | 1.00 | 2.13 |
| Congestion | 1.03 | 0.09 | 1.00 | 2.28 |
