Table 3. Related factors of life satisfaction by age group-results of multivariable regression analysis.
| Variables | Subcategory‡ | Young-old (65 to 79 years) coefficient† |
Old-old (80 years or older) coefficient† |
|---|---|---|---|
| Age | (Continuous) | –0.097 | 0.479** |
| Gender | Male | 0.159 | –0.716 |
| Depression | Yes | –5.505*** | –7.716*** |
| Cognitive impairment | Mild | –3.292*** | –1.555 |
| Moderate or severe | –5.579*** | –4.625** | |
| K-ADL score | (Continuous) | –2.344*** | –2.190*** |
| Chronic diseases | Yes | –1.932** | –1.961 |
| Level of education | Middle school | –0.398 | 2.278 |
| High school | 1.539 | 3.902 | |
| College or higher | 2.789* | 8.517*** | |
| Marital status | Married | –0.252 | –1.903 |
| Familial-communication | (Continuous) | 0.013*** | 0.028*** |
| Social activities | 1 | 3.824*** | 3.039** |
| 2 | 4.010*** | 1.45 | |
| 3+ | 7.800*** | 3.28 | |
| Economic activities | Yes | 1.201 | 0.327 |
| Household assets | 2nd quartile | 5.869*** | 6.130*** |
| 3rd quartile | 9.109*** | 11.019*** | |
| 4th quartile | 11.820*** | 12.294*** | |
| Medical insurance | NHI (Self-employed) | 4.688** | 3.696 |
| NHI (Workers) | 5.122** | 6.696** | |
| F-value | 48.66*** | 23.08*** | |
| r2 | 0.2717 | 0.3388 | |
| VIF | 1.04–4.08 | 1.04–2.96 | |
Significance level: *p<0.05, **p<0.01, ***p<0.001. †Linear regression analysis were performed. ‡Reference group: depression (no), dementia (no), chronic disease (no), economic activities (no), household assets (1st quartile), medical insurance (Medical Aid), gender (female), level of education (less than elementary school), marital status (widowed/divorced/single), social activities (none), cognitive impairment (fair). K-ADL: Korean version of activities of daily living; NHI: National Health Insurance; VIF: variance inflation factor