| (I)生源地组 | (J)生源地组 | 平均值差值(I-J) | 标准误差 | 显著性 | 
| 1.00 | 2.00 | −3.78487 | 2.24744 | 0.093 | 
| 3.00 | 0.01064 | 2.37682 | 0.996 | |
| 2.00 | 1.00 | 3.78487 | 2.24744 | 0.093 | 
| 3.00 | 3.79551 | 2.87934 | 0.188 | |
| 3.00 | 1.00 | −0.01064 | 2.37682 | 0.996 | 
| 2.00 | −3.79551 | 2.87934 | 0.188 |