Table 4 ICOC elasticity for sub-samples
| Â | Â | ICOC elasticity | Â | ||||
|---|---|---|---|---|---|---|---|
| Â | Â | OP costs | Â | IP costs | Â | Total costs | Â |
OLS model | Clinics only (n = 9,437) | -0.33 (0.007) | * | -1.49 (0.04) | ** | -0.52 (0.01) | ** |
|  | Hospitals only (n = 16,975) | -0.03 (0.006) | * | -1.68 (0.04) | * | -0.24 (0.007) | * |
2SLS model | Clinics only | 1.03 (0.26) | * | -11.62 (1.93) | * | -1.07 (0.31) | * |
| Â | Weak Instrument (Anderson-Rubin Wald test F) | 23.3 | * | 61.46 | * | 12.54 | * |
|  | Wald test for endogeneity χ2(1) | 30.56 | * | 46.68 | * | 5.75 | †|
|  | Hospitals only | 0.28 (0.20) |  | -3.21 (1.52) | †| -0.50 (0.28) |  |
|  | Weak Instrument (Anderson-Rubin Wald test F) | 2.04 |  | 4.45 | †| 3.21 |  |
|  | Wald test for endogeneity χ2(1) | 2.43 |  | 1.02 |  | 0.87 |  |