| 影响因素 | S1 | S2 | S3 | S4 | S5 | S6 | S7 | S8 |
| 性别(S1) | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 |
| 年龄(S2) | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 |
| 健康状况(S3) | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 |
| 受教育程度(S4) | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 经济收入(S5) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 家人支持(S6) | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 |
| 隔代照料(S7) | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 婚姻状况(S8) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |