Participant demographics
| Age (years) | Female (%) | Male (%) | Total (%) |
| 18–49 | 1 (4.8) | 0 (0) | 1 (4.8) |
| 50–59 | 3 (14.3) | 1 (4.8) | 4 (19.0) |
| 60–69 | 4 (19.0) | 4 (19.0) | 8 (38.1) |
| 70–79 | 0 (0) | 5 (23.8) | 5 (23.8) |
| ≥80 | 1 (4.8) | 2 (9.5) | 3 (14.3) |
| Total | 9 (42.9) | 12 (57.1) | 21 (100.0) |