HAQ and SF-12 scores after imputation of missing items.
| Instruments (best/worst score) | Mean | SD | Median | IQR | Patients with Best/Worst Scores, % | Observations with Imputed Items, % |
|---|---|---|---|---|---|---|
| HAQ (0/3) | 0.77 | 0.69 | 0.63 | 0.25–1.25 | 17/0.3 | 22 |
| SF-12, PCS (100/0) | 54 | 18 | 57 | 44–67 | 0.0/0.0 | 15 |
| SF-12, MCS (100/0) | 58 | 17 | 57 | 47–74 | 0.0/0.0 | 16 |
HAQ: Health Assessment Questionnaire; PCS: physical component score; MCS: mental component score; IQR: interquartile range.