Table 4.
Raw score to interval scale conversion table for the scales
|
Raw |
Summary |
Physical |
Cognitive |
|---|---|---|---|
| Score | Scale | Scale | Scale |
| 0 |
0.00 |
0.00 |
0.00 |
| 1 |
2.34 |
1.97 |
1.46 |
| 2 |
4.05 |
3.43 |
2.69 |
| 3 |
5.29 |
4.51 |
3.73 |
| 4 |
6.31 |
5.42 |
4.70 |
| 5 |
7.22 |
6.24 |
5.60 |
| 6 |
8.05 |
7.00 |
6.43 |
| 7 |
8.83 |
7.73 |
7.21 |
| 8 |
9.59 |
8.45 |
7.98 |
| 9 |
10.32 |
9.16 |
8.78 |
| 10 |
11.05 |
9.88 |
9.65 |
| 11 |
11.77 |
10.61 |
10.71 |
| 12 |
12.49 |
11.35 |
12.00 |
| 13 |
13.22 |
12.13 |
|
| 14 |
13.96 |
12.94 |
|
| 15 |
14.70 |
13.78 |
|
| 16 |
15.46 |
14.65 |
|
| 17 |
16.24 |
15.53 |
|
| 18 |
17.03 |
16.41 |
|
| 19 |
17.83 |
17.29 |
|
| 20 |
18.64 |
18.21 |
|
| 21 |
19.44 |
19.21 |
|
| 22 |
20.25 |
20.38 |
|
| 23 |
21.06 |
21.93 |
|
| 24 |
21.89 |
24.00 |
|
| 25 |
22.75 |
|
|
| 26 |
23.67 |
|
|
| 27 |
24.71 |
|
|
| 28 |
25.95 |
|
|
| 29 |
27.66 |
|
|
| 30 | 30.00 |
N.B. The conversions only remain valid if there are no missing data. The transformation can only occur when data are complete because, for example, a score of say 6 from complete data is not the same as a score of 6 from incomplete data. The latter is likely to represent a higher level of the attribute being measured.