This table summarises the analysis of variables in relation to percentage of complaints and compliments
| Variables | Study cohort (% of cohort) | Complaints (% of complaints) | Compliments (% of compliments) | P value (*<0.05) | |
| N | 25 | 15 | 10 | ||
| Median age (IQR) | 79 (72–86) | 79 (72–85) | 81 (68–87) | 0.94 | |
| Gender | Male | 21 (84) | 11 (73) | 10 (100) | 0.12 |
| ASA | n with ASA ≥ 3 | 14 (56) | 7 (47) | 7 (70) | 0.41 |
| Source of PALS interaction | Patient | 12 (48) | 3 (20) | 9 (90) | 0.001* |
| Other | 13 (52) | 12 (80) | 1 (10) | ||
| Referred from other hospital | Yes | 16 (64) | 10 (67) | 6 (60) | 1.0 |
| Length of stay | >10 days | 16 (64) | 11 (73) | 5 (50) | 0.4 |
| Admission to operation | >1 day | 8 (32) | 5 (33) | 3 (30) | 1.0 |
| Re-operation | Yes | 7 (28) | 6 (40) | 1 (10) | 0.2 |
| Anticoagulation | Yes | 7 (28) | 4 (27) | 3 (30) | 0.7 |
| Complication (AKI or MI) | Yes | 5 (20) | 3 (20) | 2 (20) | 1.0 |
AKI, acute kidney injury; ASA, American Society of Anesthesiologists; cSDH, chronic subdural haematoma; MI, myocardial injury; PALS, Patient Advise and Liason Service.