Table 4.
The estimated variance components and percentage of variance for p × i design in G-study for four domains of quality of life instrument QLICP-CHD
| |
p
(person) |
i
(item) |
p * i
(person*item) |
|||
|---|---|---|---|---|---|---|
| Domain | Variance component | Percent (%) | Variance component | Percent (%) | Variance component | Percent (%) |
| PHD |
0.50 |
28.30 |
0.08 |
4.48 |
1.20 |
67.22 |
| PSD |
0.59 |
42.20 |
0.15 |
10.87 |
0.65 |
46.93 |
| SOD |
0.21 |
11.76 |
0.25 |
14.33 |
1.30 |
73.91 |
| SPD | 0.26 | 17.45 | 0.16 | 10.74 | 1.07 | 71.81 |
p: person effect, i: item effect, p × i: person-by-item interaction effect.