Table 3.
Convergent validity of the SF-36 questionnairea
| SF-36 subscales | Barthel index | SF-36 physical component summary | SF-36 mental component summary | Beck depression Inventory-II | ||
|---|---|---|---|---|---|---|
| Total score | Item 12: interest in other people | Item 17: fatigue | ||||
| Physical Functioning | .487 | .755 | .541 | -.519 | -.298 | -.206 |
| Role Limitations Due To Physical Problems | .246 | .829 | .682 | -.376 | -.212 | -.162 |
| Pain | .296 | .718 | .486 | -.342 | -.250 | -.281 |
| General Health | .269 | .542 | .537 | -.519 | -.415 | -.342 |
| Vitality | .311 | .643 | .746 | -.602 | -.413 | -.440 |
| Social Functioning | .277 | .643 | .749 | -.476 | -.463 | -.306 |
| Role Limitations Due To Emotional Problems | .235 | .607 | .820 | -.355 | -.258 | -.143 |
| Mental Health | .239 | .539 | .752 | -.601 | -.488 | -.466 |
| Mental component summary | .329 | .769 | - | -.606 | -.455 | -.354 |
| Physical component summary | .429 | - | .769 | -.564 | -.356 | -.317 |
aSpearman rank-order correlation
All p-values <0.05