Table 4 The estimated variance components and percentage of variance accounted for by effects (percent) for p × i design in G-study for four domains of quality of life instrument QLICD-PU (\({\text{n}}_{{\text{p}}}^{{\prime }} = 153\))

PHD (\({\text{n}}_{{\text{i}}}^{{\prime }} = 8\))

0.517

27.80

0.224

12.04

1.119

60.16

PSD (\({\text{n}}_{{\text{i}}}^{{\prime }} = 11\))

0.547

35.92

0.128

8.40

0.848

55.68

SOD (\({\text{n}}_{{\text{i}}}^{{\prime }} = 11\))

0.190

12.20

0.092

5.91

1.275

81.89

SPD (\({\text{n}}_{{\text{i}}}^{{\prime }} = 14\))

0.143

8.99

0.257

16.15

1.191

74.86