Table 5. Proportion of missing values for key variables in the ketamine sample data.
| Variable | Missing | Available | ||
| Baseline n (%) | Follow up n (%) | Baseline n (%) | Follow up n (%) | |
| EOLPRO | 48 (25.9) | 81 (43.8) | 137 (74.1) | 104 (56.2) |
| EORTC QLQ-C15-PAL QOL | 32 (17.3) | 73 (39.5) | 153 (82.7) | 112 (60.5) |
| EORTC QLQ-C15-PAL Qu 10 | 25 (13.5) | 71 (38.4) | 160 (86.5) | 114 (61.6) |
| AKPS | 3 (1.6) | 8 (4.3) | 182 (98.4) | 177 (95.7) |
| BPI score | 4 (2.2) | 13 (7.0) | 181 (97.8) | 172 (93.0) |
AKPS = Australian-modified Karnofsky Performance Status; BPI = Brief Pain Inventory; EOLPRO = end of life patient reported outcome; MMSE = Mini-Mental State Examination; QOL = quality of life.