Age (year) | Number | Percentage |
≤40 | 3 | 10 |
41 - 50 | 3 | 10 |
51 - 60 | 3 | 10 |
61 - 70 | 8 | 26.67 |
71 - 80 | 10 | 33.33 |
>80 | 3 | 10 |
Total | 30 | 100 |