| General information |
| Experimental group | Control group | X2/t | P |
| Gender | Male | 27 | 28 | 0.124 | >0.05 |
| Female | 24 | 23 | |||
| Average age | 71.50 ± 5.41 | 71.54 ± 5.47 | 0.054 | >0.05 | |
| Types of chronic diseases | Hypertension | 17 | 18 | 0.157 | >0.05 |
| Diabetes | 18 | 18 | |||
| Coronary heart disease | 5 | 4 | |||
| Hyperlipidemia | 6 | 6 | |||
| Other | 5 | 5 | |||