Under-identification and weak identification tests: whole sample
| Family donor | Non-family donor | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inheritance | Gift | Inheritance | Gift | |||||||||
| Binary | Amount | Ratio | Binary | Amount | Ratio | Binary | Amount | Ratio | Binary | Amount | Ratio | |
| Underidentification test (Kleibergen-Paap LM statistics) | 539.08 | 405.66 | 284.25 | 64.84 | 69.99 | 48.85 | 95.51 | 73.32 | 46.94 | 16.74 | 13.18 | 6.84 |
| Chi-square (2) p-value | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Weak identification test (Kleibergen-Paap rk Wald F statistic) | 2174.6 | 1475.2 | 497.7 | 100000 | 278.4 | 77.4 | 574.8 | 252.7 | 112.0 | 170000 | 60.9 | 9.6 |
| Stock-Yogo weak ID test critical values | ||||||||||||
| 10% maximal IV size | 16.38 | |||||||||||
| 15% maximal IV size | 8.96 | |||||||||||
| 20% maximal IV size | 6.66 | |||||||||||
| 25% maximal IV size | 5.53 | |||||||||||
| Family donor | Non-family donor | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inheritance | Gift | Inheritance | Gift | |||||||||
| Binary | Amount | Ratio | Binary | Amount | Ratio | Binary | Amount | Ratio | Binary | Amount | Ratio | |
| Underidentification test (Kleibergen-Paap LM statistics) | 539.08 | 405.66 | 284.25 | 64.84 | 69.99 | 48.85 | 95.51 | 73.32 | 46.94 | 16.74 | 13.18 | 6.84 |
| Chi-square (2) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Weak identification test (Kleibergen-Paap rk Wald F statistic) | 2174.6 | 1475.2 | 497.7 | 100000 | 278.4 | 77.4 | 574.8 | 252.7 | 112.0 | 170000 | 60.9 | 9.6 |
| Stock-Yogo weak ID test critical values | ||||||||||||
| 10% maximal IV size | 16.38 | |||||||||||
| 15% maximal IV size | 8.96 | |||||||||||
| 20% maximal IV size | 6.66 | |||||||||||
| 25% maximal IV size | 5.53 | |||||||||||
Source(s): Own elaborations based on HFCS data