| Variables | B | β | t | p |
| cognitive ability | 0.00 | 0.01 | 0.23 | 0.818 |
| Total number of physiologic discomforts | 0.19 | 0.19 | 2.71 | 0.007 |
| Pain | 0.05 | 0.17 | 2.34 | 0.020 |
| Depression | 0.00 | 0.04 | 0.50 | 0.614 |
| Delusion | 0.05 | 0.14 | 1.56 | 0.121 |
| Hallucination | 0.10 | 0.27 | 2.95 | 0.004 |