Scale | No.items | α | Mean ± SD | Convergent validity | discriminant validity | ||
---|---|---|---|---|---|---|---|
Range of correlation | Scaling success (percent) | Range of correlation | Scaling success (percent) | ||||
FACT-G | |||||||
Physical wellbeing | 7 | 0.81 | 17.21 ± 5.42 | 0.51–0.84 | 7/7(100) | 0.002–0.49 | 21/21(100) |
Social/family wellbeing | 7 | 0.75 | 17.16 ± 5.15 | 0.41–0.79 | 7/7(100) | 0.05–0.37 | 19/21(90) |
Emotional wellbeing | 6 | 0.72 | 13.03 ± 4.79 | 0.19–0.81 | 5/6(83) | 0.02–0.39 | 15/18(83) |
Functional wellbeing | 7 | 0.61 | 14.73 ± 3.98 | 0.44–0.62 | 7/7(100) | 0.01–0.27 | 21/21(100) |
EORTC QLQ-C30 | |||||||
Global health status/QOL | 2 | 0.84 | 53.66 ± 22.35 | 0.92–0.94 | 2/2(100) | 0.16–0.60 | 28/28(100) |
Functional scales | |||||||
Physical functioning | 5 | 0.69 | 75.25 ± 17.35 | 0.50–0.75 | 5/5(100) | 0.03–0.62 | 62/70(88) |
Role functioning | 2 | 0.83 | 76.26 ± 23.30 | 0.92–0.93 | 2/2(100) | 0.01–0.68 | 28/28(100) |
Emotional functioning | 4 | 0.87 | 62.69 ± 27.08 | 0.79–0.89 | 4/4(100) | 0.03–0.71 | 56/56(100) |
Cognitive functioning | 2 | 0.69 | 73.48 ± 25.88 | 0.86–0.87 | 2/2(100) | 0.01–0.63 | 28/28(100) |
Social functioning | 2 | 0.87 | 61.49 ± 28.62 | 0.93–0.94 | 2/2(100) | 0.01–0.60 | 28/28(100) |
Symptom scales/items | |||||||
Fatigue | 3 | 0.67 | 32.32 ± 2.33 | 0.75–0.80 | 3/3(100) | 0.05–0.65 | 42/42(100) |
Nausea and vomiting | 2 | 0.58 | 12.37 ± 18.72 | 0.005–0.10 | 0/2(0) | 0.03–0.57 | 28/28(100) |
Pain | 2 | 0.57 | 27.15 ± 21.64 | 0.82–0.85 | 2/2(100) | 0.22–0.63 | 28/28(100) |
Dyspnoea | 1 | – | 29.79 ± 31.97 | 1 | 1/1(100) | 0.13–0.62 | 14/14(100) |
Insomnia | 1 | – | 26.26 ± 27.94 | 1 | 1/1(100) | 0.06–0.61 | 14/14(100) |
Appetite | 1 | – | 25.00 ± 26.17 | 1 | 1/1(100) | 0.003–0.51 | 14/14(100) |
Constipation | 1 | – | 27.27 ± 33.41 | 1 | 1/1(100) | 0.03–0.32 | 14/14(100) |
Diarrhoea | 1 | – | 13.13 ± 23.57 | 1 | 1/1(100) | 0.03–0.51 | 14/14(100) |
Financial difficulties | 1 | – | 57.83 ± 34.91 | 1 | 1/1(100) | 0.19–0.62 | 14/14(100) |