Table 4 Scale efficiency statistics and returns to scale
| Â | NHS primary care centers | IKA primary care centers | ||||
|---|---|---|---|---|---|---|
Statistics | Small (N = 36) | Medium (N = 35) | Large (N = 32) | Small (N = 30) | Medium (N = 25) | Large (N = 36) |
   Mean | 74.33 | 87.53 | 97.01 | 77.77 | 95.55 | 95.68 |
   Median | 80.36 | 91.09 | 98.52 | 77.99 | 98.59 | 99.43 |
   Minimum | 27.18 | 45.56 | 83.65 | 44.10 | 75.61 | 74.63 |
   Maximum | 100.00 | 100.00 | 100.00 | 98.64 | 100.00 | 100.00 |
Returns to Scale (% N) | Â | Â | Â | Â | Â | Â |
   Increasing (IRS) | 32 (88.9%) | 32 (91.4%) | 22 (68.7%) | 30 (100.0%) | 17 (68.0%) | 12 (33.3%) |
   Constant (CRS) | 3 (8.3%) | 2 (5.7%) | 2 (6.3%) | 0 (0.0%) | 6 (24.0%) | 8 (22.2%) |
   Decreasing (DRS) | 1 (2.8%) | 1 (2.9%) | 8 (25.0%) | 0 (0.0%) | 2 (8.0%) | 16 (44.4%) |