| 组别Group | 检验统计 Inspection statistics | 标准误差 Standard error | P |
| A-B | −38.786 | 35.884 | =0.280 |
| A-C | −120.293 | 35.911 | =0.001 |
| A-D | −397.985 | 36.252 | <0.001 |
| B-C | −81.507 | 35.844 | =0.023 |
| B-D | −359.200 | 36.186 | <0.001 |
| C-D | −277.693 | 36.212 | <0.001 |