title: Development of a Korean version of the Cancer Therapy Satisfaction Questionnaire (CTSQ): cross-cultural adaptation, reliability, and validity.
abstract: OBJECTIVE
  (1) To translate original English Cancer Therapy Satisfaction Questionnaire (CTSQ) into Korean and perform validation, (2) to compare CTSQ domains of expectations of therapy (ET), feelings about side effects (FSE), and satisfaction with therapy (SWT) by cancer therapy type.
  
  
  METHODS
  Cross-cultural adaptation was performed according to guidelines: translation, back translation, focus-group, and field test. We performed validation with internal consistency by Cronbach's alpha and construct validity by exploratory factor analysis (EFA) with varimax rotation method. We compared each CTSQ domain between traditional Korean Medicine (TKM) and integrative cancer therapy (ICT) of combining western and TKM by two-sample t test.
  
  
  RESULTS
  Cross-cultural adaptation produced no major modifications in the items and domains. A total of 102 outpatients were participated. Mean age was 51.9 ± 12.4. Most were stage 4 (74.4 %) cancer. Mean scores of ET, FSE, and SWT were 81.2 ± 15.7, 79.5 ± 22.9, and 75.7 ± 14.8, respectively. Cronbach's alpha of ET, FSE, and SWT were 0.86, 0.78, and 0.74, respectively. EFA loaded items on the three domains, which is very close to that of the original CTSQ. ET and SWT was similar, but FSE was significantly higher in TKM than ICT (87.5 ± 19.3 vs. 74.9 ± 23.5; p = 0.0054).
  
  
  CONCLUSIONS
  Cross-cultural adaptation was successful, and the adapted Korean CTSQ demonstrated good internal consistency and construct validity. Similar expectation and satisfaction was shown between the two types of therapy, but patient's reported feelings about side effects was significantly lower in patients receiving TKM than receiving ICT. Korean version of CTSQ can be used to evaluate Korean cancer patient's experiences receiving various cancer therapy types.
authors.affiliation: Graduate School of East-West Medical Science, Kyung Hee University Hospital Global Campus, 1732 Deogyeong-daro, Giheung-gu, Gyeonggi-do, Yongin-si, 446-701, Republic of Korea.
authors.forename: So Jeong
authors.initials: SJ
authors.lastname: Park
authors.forename: Soo Min
authors.initials: SM
authors.lastname: An
authors.forename: Se Hyun
authors.initials: SH
authors.lastname: Kim
mesh_terms: D000368:Aged; D044466:Asian People / Q000523:psychology; D003431:Cross-Cultural Comparison; D005163:Factor Analysis, Statistical; D005260:Female; D017144:Focus Groups; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000523:psychology* / Q000628:therapy*; D017063:Outcome Assessment, Health Care; D017060:Patient Satisfaction; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D056910:Republic of Korea; D011795:Surveys and Questionnaires; D014177:Translations