| variable | B value | SE values | β value | t value | P value |
| constant | 40.396 | 1.277 |
| 31.786 | 0.000 |
| gender | 1.787 | 1.118 | 0.303 | 1.598 | 0.010 |
| Level of education | −2.042 | 0.858 | −0.827 | −2.380 | 0.005 |
| Relationship with patient (with spouse as reference) | |||||
| children | −1.771 | 1.060 | −0.272 | −1.671 | 0.005 |
| Other relatives | −2.311 | 2.286 | −0.133 | −1.011 | 0.006 |
| parents | −3.562 | 2.223 | −0.282 | −1.586 | 0.011 |
| Monthly household income | −2.459 | 0.810 | −1.001 | −3.034 | 0003 |