| 对照组 | $\text{25}+\frac{\text{2(10}{{\text{x}}_{\text{C}}}\text{+10)}}{\text{4}}-\text{10}$ | $\text{25}+\frac{\text{20}{{\text{x}}_{\text{C}}}}{\text{4}}-\text{1}$ |
| 高收益组 | $\text{25+}\frac{\text{2(10}{{\text{x}}_{\text{C}}}\text{+10)}}{\text{4}}-\text{10}$ | $\text{25}+\frac{\text{20}{{\text{x}}_{\text{C}}}}{\text{4}}-{{\text{x}}_{\text{D}}}$ |
| 低收益组 | $\text{25}+\frac{\text{2(10}{{\text{x}}_{\text{C}}}\text{+10)}}{\text{4}}-\text{10}$ | $\text{25}+\frac{\text{20}{{\text{x}}_{\text{C}}}}{\text{4}}-\text{10}{{\text{x}}_{\text{D}}}$ |