Table 5 Transformation of raw (ordinal) score to interval score
From: Development and evaluation of CARIES-QC: a caries-specific measure of quality of life for children
Raw score | Interval score |
|---|---|
0 | 0 |
1 | 2.63 |
2 | 4.50 |
3 | 5.84 |
4 | 6.90 |
5 | 7.80 |
6 | 8.60 |
7 | 9.32 |
8 | 10.00 |
9 | 10.64 |
10 | 11.26 |
11 | 11.86 |
12 | 12.45 |
13 | 13.03 |
14 | 13.62 |
15 | 14.22 |
16 | 14.84 |
17 | 15.48 |
18 | 16.17 |
19 | 16.92 |
20 | 17.76 |
21 | 18.75 |
22 | 19.96 |
23 | 21.65 |
24 | 24.00 |