Table 3 Variability in the SF-12 questionnaire by intervention type
From: Variability of indication criteria in knee and hip replacement: an observational study
VARIABILITY INDICATORS | SF-12 QUESTIONNAIRE | |||
|---|---|---|---|---|
Physical component | Mental component | |||
Hip | Knee | Hip | Knee | |
No. of cases | 503 | 815 | 503 | 815 |
Range | 25.1 - 36.0 | 25.5 - 33.8 | 31.5 - 45.9 | 35.9 - 49.4 |
Mean (SD) | 29.7 (3.1) | 29.5 (1.9) | 41.9 (4.3) | 42.0 (3.7) |
Weighted mean (SD) | 29.6 (2.6) | 29.8 (1.8) | 42.7 (3.4) | 42.2 (2.9) |
EQ5-95 | 1.4 | 1.3 | 1.5 | 1.3 |
CV5-95 | 0.08 | 0.05 | 0.08 | 0.08 |
WCV5-95 | 0.08 | 0.03 | 0.07 | 0.07 |