Table 1. Demographic characteristics of the sample.
| Characteristics | N | % |
| Gender | ||
| male | 52 | 65.0 |
| female | 28 | 35.0 |
| Age | ||
| < 55 years old | 23 | 28.7 |
| 55-65 years old | 19 | 23.8 |
| 66-72 years old | 20 | 25.0 |
| 73 ≥ years old | 18 | 22.5 |
| Family status | ||
| non-married (single, divorced, widowed) | 20 | 25.0 |
| married | 60 | 75.0 |
| Residence place | ||
| Urban | 62 | 77.5 |
| semi-urban or rural | 18 | 22.5 |
| Living status | ||
| Living alone | 7 | 8.8 |
| Living with others | 73 | 91.3 |
| Employment status | ||
| unemployed | 7 | 8.8 |
| private sector employee | 17 | 21.3 |
| civil servant | 4 | 5.0 |
| domestic work | 3 | 3.8 |
| pensioner | 48 | 60.0 |
| other | 1 | 1.3 |
| Insurance status | ||
| national insurance | 64 | 80.0 |
| private insurance | 10 | 12.5 |
| national and private insurance | 3 | 3.8 |
| non-insured | 3 | 3.8 |
| Educational status | ||
| primary school | 19 | 23.8 |
| secondary school | 41 | 51.2 |
| higher education | 20 | 25.0 |