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Data quality: missing data, floor and ceiling effects
| CHAQ | Missing data (%) | Floor effect (%) | Ceiling effect (%) |
| Dressing | 6.2 | 3.1 | 68.8 |
| Arising | 3.1 | 26.0 | 30.2 |
| Eating | 3.1 | 6.3 | 45.8 |
| Walking | 3.1 | 13.7 | 41.1 |
| Hygiene | 6.2 | 3.2 | 47.9 |
| Reach | 7.3 | 7.4 | 40.4 |
| Grip | 6.2 | 16.0 | 40.4 |
| Activities | 9.3 | 2.1 | 68.1 |
| Evaluation of pain | 3.1 | 35.5 | 1.1 |
| Evaluation of overall well-being | 4.2 | 26.1 | 1.1 |
