Cross-cultural application of the Korean version of the European Organization for Research and Treatment of Cancer quality of life questionnaire cervical cancer module.
OBJECTIVE
This study was conducted to evaluate the psychometric properties of the Korean version of the Quality of Life questionnaire cervical cancer module (QLQ-CX24), developed by the European Organization for Research and Treatment of Cancer (EORTC).


METHODS
The EORTC QLQ-CX24 and the core questionnaire (the EORTC QLQ-C30) were administered to 860 Korean disease-free survivors of cervical cancer and 494 female control subjects from the general Korean population. The construct reliability and validity of the EORTC QLQ-CX24 questionnaire were assessed via factor analysis, multitrait scaling analyses and known group comparisons.


RESULTS
Factor structure of the Korean version of the EORTC QLQ-CX24 questionnaire agreed with the originally hypothesized scale structure. Scale reliability was confirmed by Cronbach's alpha coefficients for internal consistency, which ranged from 0.78 to 0.87. Convergent and discriminant validity was confirmed by multitrait scaling analysis, which revealed scaling errors of 0.9. The clinical validity of the Korean version of the EORTC QLQ-CX24 was demonstrated by the ability to discriminate among controls and patient subgroups of different stages, treatments and overall health status.


CONCLUSIONS
The Korean version of the EORTC QLQ-CX24 was found to be a reliable and a valid measure of quality of life among survivors of cervical cancer when administered in a large survey setting.
Shin
Dong Wook
DW
National Cancer Control Research Institute and Hospital, National Cancer Center, Ilsan-Gu, Goyang, Korea.
Ahn
Eunmi
E
Kim
Yong-Man
YM
Kang
Sokbom
S
Kim
Byoung-Gie
BG
Seong
Seok Ju
SJ
Cha
Soon Do
SD
Park
Chan-Yong
CY
Yun
Young Ho
YH
D000328:Adult; D000368:Aged; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D007723:Korea; D008875:Middle Aged; D011788:Quality of Life; D011795:Surveys and Questionnaires; D002583:Uterine Cervical Neoplasms / Q000401:mortality / Q000523:psychology*