Table 3.
Scoring Methods and Test-retest ability of QOL-OC
| Scale | Scales | Items | Score Range | Min | Max | Rough Score | Standardized Score | Spearman correlation coefficient(r) |
|---|---|---|---|---|---|---|---|---|
| Pain and discomfort | PD | 1, 2, 3, 4, 26 | 1~ 4 | 5 | 20 | (1 + 2 + 3 + 4 + 26)/5 | [(RS-1)/3] × 100 | 0.881** |
| Eating | ET | 5, 6, 7, 8 | 1~ 4 | 4 | 16 | (5 + 6 + 7 + 8)/4 | [(RS-1)/3] × 100 | 0.975** |
| Saliva | SA | 11, 12 | 1~ 4 | 2 | 8 | (11 + 12)/2 | [(RS-1)/3] × 100 | 0.918** |
| Social contact | SC | 15, 16, 17, 18, 23 | 1~ 4 | 5 | 20 | (15 + 16 + 17 + 18 + 23)/5 | [(RS-1)/3] × 100 | 0.939** |
| Diet | DT | 21, 22 | 1~ 4 | 2 | 8 | (21 + 22)/2 | [(RS-1)/3] × 100 | 0.923** |
| Teeth | TE | 9 | 1~ 4 | 1 | 4 | 9 | [(RS-1)/3] × 100 | 0.984** |
| Opening mouth | OM | 10 | 1~ 4 | 1 | 4 | 10 | [(RS-1)/3] × 100 | 0.938** |
| Sense of taste | TA | 13 | 1~ 4 | 1 | 4 | 13 | [(RS-1)/3] × 100 | 0.997** |
| Appearance | AP | 14 | 1~ 4 | 1 | 4 | 14 | [(RS-1)/3] × 100 | 0.817** |
| Sexuality | SX | 19 | 1~ 4 | 1 | 4 | 19 | [(RS-1)/3] × 100 | / a |
| Oral ulcer | OU | 20 | 1~ 4 | 1 | 4 | 20 | [(RS-1)/3] × 100 | 0.990** |
| Shoulder & neck function | SN | 24 | 1~ 4 | 1 | 4 | 24 | [(RS-1)/3] × 100 | 0.374* |
| Bleeding Gingiva | BG | 25 | 1~ 4 | 1 | 4 | 25 | [(RS-1)/3] × 100 | 0.997** |
| Weight loss | WL | 27 | 1~ 2 | 1 | 2 | 27 | (RS-1) × 100 | 0.866** |
| Weight gain | WG | 28 | 1~ 2 | 1 | 2 | 28 | (RS-1) × 100 | / a |
*P < 0.05 **p < 0.01
a Each subject got 0 points in the sexuality scale and weight gain scale in the retest trial (constant sequence), so these scales were not part of the calculation of the correlation coefficient