Korean version of the caregiver quality of life index-cancer (CQOLC-K).
OBJECTIVE
The aim of this study was to develop and evaluate the internal consistency and construct validity of a Korean version of the Caregiver Quality of Life Index-Cancer (CQOLC-K).


METHODS
The CQOLC-K was administered to 270 caregivers, along with the Medical Outcomes Study Short Form-36 (SF-36) and the Beck Depression Inventory (BDI).


RESULTS
Internal consistency of the CQOLC-K (0.90) and all inter-scale correlations were significant in the expected direction (p < 0.001). Convergent validity was supported with moderate to strong correlations between the CQOLC-K and the mental component scores of the SF-36 (r = 0.39-0.58), and between the CQOLC-K and the two BDI scores (r = 0.50 and 0.60). Divergent validity was supported by weaker or negligible correlations between the CQOLC-K and the physical component scores of the SF-36 (r = 0.16-0.30). Contrasting groups validity showed that the CQOLC-K was able to distinguish clearly between patients differing in treatment history (p < 0.005), performance status (p < 0.005), care area (p < 0.005), and length of time after diagnosis (p < 0.005).


CONCLUSIONS
These findings support the internal consistency reliability and construct validity of the Korean version of the CQOLC-K. The instrument can be used to measure quality of life in caregivers of cancer patients in clinical and epidemiological research.
Rhee
Young Sun
YS
Quality of Cancer Care Branch, Research Institute, National Cancer Center, Gyeonggi-do, Korea.
Shin
Dong Ok
DO
Lee
Kwang Mi
KM
Yu
Han Jin
HJ
Kim
Joung Wha
JW
Kim
Soon Ok
SO
Lee
Ran
R
Lee
Yeon Ok
YO
Kim
Nam Shin
NS
Yun
Young Ho
YH
D000328:Adult; D017028:Caregivers / Q000523:psychology*; D005260:Female; D006801:Humans; D007723:Korea; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000628:therapy*; D011788:Quality of Life; D015203:Reproducibility of Results