Table 4 Comparison of mean score and measurement properties between the selected items and the items in the 15-item short form of the Singapore Caregiver Quality of Life Scale (SCQOLS-15) developed in a previous study of caregivers of cancer patients
From: Development of a short form of the Singapore Caregiver Quality of Life Scale – Dementia: SCQOLS-D-15
Mean score | r(NPI) | r(PPI) | Alpha | ICC | |
|---|---|---|---|---|---|
Domain and items | Estimate (95% CIa) | Estimate (95% CIb) | Estimate (95% CIb) | Estimate (95% CIb) | Estimate (95% CIb) |
Physical Well-being | |||||
Selected items PW6 + PW8 + PW11 | 80.3 | 0.58 | 0.06 | 0.84 | 0.81 |
SCQOLS-15 PW4 + PW6 + PW8 | 77.5 | 0.58 | 0.04 | 0.89 | 0.79 |
Difference | 2.86 (1.13, 4.59) | 0.00 (−0.07, 0.07) | 0.02 (−0.06, 0.11) | − 0.04 (− 0.11, 0.02) | 0.01 (− 0.03, 0.06) |
Mental Well-being | |||||
Selected items MW5 + MW8 + MW18 | 74.5 | 0.70 | 0.22 | 0.82 | 0.93 |
SCQOLS-15 MW2 + MW3 + MW8 | 55.0 | 0.54 | − 0.09 | 0.67 | 0.76 |
Difference | 19.5 (15.9, 23.1) | 0.16 (0.04, 0.29) | 0.31 (0.12, 0.50) | 0.14 (−0.01, 0.28) | 0.18 (0.10, 0.26) |
Experience & Meaning | |||||
Selected items EM5 + EM6 + EM7 + EM12 | 61.6 | 0.31 | 0.48 | 0.85 | 0.72 |
SCQOLS-15 EM4 + EM7 + EM11 + EM12 | 59.6 | 0.36 | 0.39 | 0.80 | 0.74 |
Difference | 2.04 (0.24, 3.85) | −0.05 (−0.13, 0.03) | 0.09 (0.01, 0.17) | 0.05 (0.001, 0.10) | −0.02 (− 0.08, 0.04) |
Impact on Daily Life | |||||
Selected items DL4 + DL5 + DL8 | 69.9 | 0.70 | 0.12 | 0.90 | 0.78 |
SCQOLS-15 DL2 + DL4 + DL5 | 70.6 | 0.69 | 0.15 | 0.92 | 0.78 |
Difference | −0.65 (−2.37, 1.06) | 0.02 (− 0.04, 0.07) | −0.03 (− 0.10, 0.04) | −0.01 (− 0.06, 0.04) | 0.01 (− 0.04, 0.06) |