title: Korean version of the caregiver quality of life index-cancer (CQOLC-K).
abstract: 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.
authors: Quality of Cancer Care Branch, Research Institute, National Cancer Center, Gyeonggi-do, Korea.
authors: Young Sun
authors: YS
authors: Rhee
authors: Dong Ok
authors: DO
authors: Shin
authors: Kwang Mi
authors: KM
authors: Lee
authors: Han Jin
authors: HJ
authors: Yu
authors: Joung Wha
authors: JW
authors: Kim
authors: Soon Ok
authors: SO
authors: Kim
authors: Ran
authors: R
authors: Lee
authors: Yeon Ok
authors: YO
authors: Lee
authors: Nam Shin
authors: NS
authors: Kim
authors: Young Ho
authors: YH
authors: Yun
mesh_terms: 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