Table 5.
Linear regression analysis of the SF-36 scores
| Independent Variables | Regression Coefficient of the SF-36 Subscales (P-value)¦ | |||||||
|---|---|---|---|---|---|---|---|---|
| PF | RP | BP | VT | GH | SF | RE | MH | |
| Gender (reference: female) | -2.280* | -0.397 | 0.096 | 0.990* | 0.514 | NS | -0.353 | NS |
| Years of education (reference: >12 years) | NS | NS | NS | NS | -0.359 | NS | NS | NS |
| Working status (reference: employed) | NS | NS | NS | |||||
| Unemployed | 0.738 | -0.376 | -1.257* | -0.398 | 0.284 | |||
| Retired | -0.627 | 0.290 | 0.742 | 0.318 | -0.421 | |||
| Regular exercise (reference: yes) | -1.930* | -0.873 | NS | NS | NS | NS | NS | -0.363 |
| Age | -0.221‡ | NS | NS | NS | NS | NS | NS | NS |
| BMI | -0.043 | NS | 0.025 | -0.05 | 0.049 | NS | NS | NS |
| With depressive symptoms | -2.008* | -0.396 | -0.730* | NS | NS | NS | -1.694† | -0.892* |
| With malnutrition/at risk of malnutrition | -1.670* | -1.855† | -0.437 | -0.764* | -0.640 | NS | -0.166 | -0.368 |
| R-square (Adjusted) | 0.216 | 0.133 | 0.104 | 0.077 | 0.051 | - | 0.100 | 0.045 |
*
P <0.05,
†
P <0.01,
‡
P <0.001.
¦
Adjusted for all other variables in the table except for those marked with “NS”. NS – Not significant in univariate analysis thus not included in the linear regression for the quality of life scores. PF: Physical functioning; RP: Role limitations due to physical problems; BP: Bodily pain; GH: General health; VT: Vitality; SF: Social functioning; RE: Role limitations due to emotional problems; MH: Mental health.