Table 1 Comparisons on the contents of the Chinese versions of the SF-12v2 and VR-12
Item | Scale | Contents | SF-12v2 versus VR-12 | |
|---|---|---|---|---|
Item wording and response options | Scale scoring | |||
1 | General health | General health condition | Identical item wordinga and response options | The item was coded differently |
2a | Physical functioning | Limitations on daily activities | •Different wording but same contents •Same number of response options •Slight differences in the wording of response labels | Same scoring as the average of the two items |
2b | Moderate activities | The VR-12 included an example of playing golf, whereas the SF-12v2 used practicing Tai-Chi instead | ||
Climbing stairs | Identical item wordinga | |||
Role physical | Problems due to physical health | •Different wording but same contents •Same number of response options •Slight differences in the wording of response labels but the order was opposite to each other | Reverse code both items of VR-12 but not for SF-12v2, and need different scoring | |
3a | Accomplished less than expected | Identical item wordinga | ||
3b | Limitation in work or related activities | Identical item wordinga | ||
Role emotion | Problems due to emotions | •Different wording but same contents •Same number of response options •Slight differences in the wording of response labels but the order was opposite to each other | Reverse code both items of VR-12 but not for SF-12v2, and need different scoring | |
4a | Accomplished less than expected | Identical item wordinga | ||
4b | Limitation in work or related activities | Identical item wordinga | ||
5 | Bodily pain | Influence on daily work due to pain | Same item wording, but the VR-12 specifically mentioned that daily work included occupational work and housework | Same scoring |
Feeling of specific conditions | •Different wording but same contents •5 responses options in SF-12v2, and 6 in VR-12 | |||
6a | Mental health | Feeling calm | Identical item wordinga | •Reverse code item 6a for both the SF-12v2 and VR-12 •Need different scoring |
6c | Feeling bad mood | Identical item wordinga | ||
6b | Vitality | Feeling energetic | Slight difference in item wording | •Reverse code the item for both the SF-12v2 and VR-12 •Need different scoring |
7 | Social functioning | Limitations in social activities due to physical or emotional problems | Slight differences in item wording and response labels | Same scoring |