Table 2 SF-12 v2 items and descriptive statistics (n =1000)
From: Assessment of psychometric properties of the Korean SF-12 v2 in the general population
Item description (scale) | Mean | SD | Item response category frequency (%) | ||||
|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | |||
Moderate activities (PF) | 2.85 | 0.40 | 1.6 | 11.6 | 86.8 | NA | NA |
Climb several flights of stairs (PF) | 2.81 | 0.45 | 2.4 | 14.5 | 83.1 | NA | NA |
Accomplished less, physical (RP) | 4.53 | 0.84 | 0.8 | 3.6 | 7.4 | 18.1 | 70.1 |
Limited in kind of work (RP) | 4.72 | 0.69 | 0.4 | 2.3 | 4.6 | 10.4 | 82.3 |
Pain-interference (BP)* | 4.70 | 0.68 | 0.7 | 1.2 | 5.1 | 13.4 | 79.6 |
Health in general (GH)* | 3.73 | 0.81 | 0.6 | 9.4 | 46.9 | 36.2 | 6.9 |
Energy (VT)* | 3.71 | 0.90 | 2.1 | 8.4 | 21.6 | 52.4 | 15.5 |
Social time (SF) | 4.76 | 0.61 | 0.3 | 1.1 | 4.1 | 11.5 | 83.0 |
Accomplished less, emotional (RE) | 4.61 | 0.73 | 0.3 | 2.2 | 6.5 | 18.2 | 72.8 |
Did work less carefully (RE) | 4.67 | 0.66 | 0.0 | 1.6 | 6.0 | 16.6 | 75.8 |
Calm and peaceful (MH)* | 3.92 | 0.76 | 1.4 | 5.0 | 10.1 | 67.7 | 15.8 |
Downhearted and blue (MH) | 4.38 | 0.81 | 0.5 | 2.6 | 10.0 | 32.3 | 54.6 |