Patient and relative demographics
| Total number questioned | Sex (F:M) | Age (years) (mean/median/range) | Visited pre-operatively | Visited post-operatively | Unknown operative status | |
| Patients and relatives | 54 | 38:16 | 84.9/86.5 56–100 | 40 | 13 | 1 |
| Patients | 30 | 21:9 | 81.8/83 56–97 | 25 | 5 | 0 |
| Relatives | 24 | 17:8 | 88.9/89 79–100 | 15 | 8 | 1 |