TY - JOUR
T1 - Cross-validation of the taiwan version of the Moorehead-Ardelt Quality of Life Questionnaire II with WHOQOL and SF-36
AU - Chang, Chi Yang
AU - Huang, Chih Kun
AU - Chang, Yu Yin
AU - Tai, Chi Ming
AU - Lin, Jaw Town
AU - Wang, Jung Der
N1 - Funding Information:
Acknowledgment This study is partially supported by a project from the National Science Council, Executive Yuan of Taiwan (96-2628-B-002-071-MY3). We thank Melodie K. Moorehead, Ph.D., ABPP to permit us to translate and validate the MA II into a Taiwanese version. Both the BAROS and MA II are copyright protected instruments and Lifetime Licensing Agreements are available at the website (http://www.drmoorehead.com/).
PY - 2010/11
Y1 - 2010/11
N2 - Background: Obesity has become a major worldwide public health issue. There is a need for tools to measure patient-reported outcomes. The Moorehead-Ardelt Quality of Life Questionnaire II (MA II) contains six items. The objective of this study was to translate the MA II into Chinese and validate it in patients with morbid obesity. Methods: The MA II was translated into Chinese and back-translated into English by two language specialists to create the Taiwan version, which was validated by correlations with two other generic questionnaires of health-related quality of life (HRQOL), Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36), and World Health Organization Quality of Life (WHOQOL)-BREF Taiwan version. The convergent validity was accomplished by a series of Spearman rank correlations. Reliability of the MA II Taiwan version was determined by internal consistency obtained by Cronbach's alpha coefficient and test-retest reliability obtained by intraclass correlation coefficient. Results: One hundred subjects with morbid obesity were enrolled to test the MA II Taiwan version convergent validity and internal consistency. Test-retest studies (2 weeks apart) were applied to 30 morbidly obese patients. Satisfactory internal consistency was demonstrated by a Cronbach's alpha coefficient of 0.79. Good test-retest reliability was shown by intraclass correlations ranging from 0.73 to 0.91. The total sum of MA II scores was significantly correlated with all four domains of the WHOQOL-BREF and two major components of SF-36 (all correlations, p < 0.01; range, 0.44-0.64). All six MA II items showed significant correlations with each other (r = 0.34-0.69, p < 0.01), and the total sum of MA II scores was negatively correlated with body mass index (r =-0.31, p < 0.01), indicating a one-dimensional questionnaire of HRQOL. Conclusions: The MA II Taiwan version is an obesity-specific questionnaire for QOL evaluation with satisfactory reliability and validity. It has the advantages of extensive evaluation for HRQOL, cross-cultural application, rapid completion, high response rates, and an advanced scoring system.
AB - Background: Obesity has become a major worldwide public health issue. There is a need for tools to measure patient-reported outcomes. The Moorehead-Ardelt Quality of Life Questionnaire II (MA II) contains six items. The objective of this study was to translate the MA II into Chinese and validate it in patients with morbid obesity. Methods: The MA II was translated into Chinese and back-translated into English by two language specialists to create the Taiwan version, which was validated by correlations with two other generic questionnaires of health-related quality of life (HRQOL), Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36), and World Health Organization Quality of Life (WHOQOL)-BREF Taiwan version. The convergent validity was accomplished by a series of Spearman rank correlations. Reliability of the MA II Taiwan version was determined by internal consistency obtained by Cronbach's alpha coefficient and test-retest reliability obtained by intraclass correlation coefficient. Results: One hundred subjects with morbid obesity were enrolled to test the MA II Taiwan version convergent validity and internal consistency. Test-retest studies (2 weeks apart) were applied to 30 morbidly obese patients. Satisfactory internal consistency was demonstrated by a Cronbach's alpha coefficient of 0.79. Good test-retest reliability was shown by intraclass correlations ranging from 0.73 to 0.91. The total sum of MA II scores was significantly correlated with all four domains of the WHOQOL-BREF and two major components of SF-36 (all correlations, p < 0.01; range, 0.44-0.64). All six MA II items showed significant correlations with each other (r = 0.34-0.69, p < 0.01), and the total sum of MA II scores was negatively correlated with body mass index (r =-0.31, p < 0.01), indicating a one-dimensional questionnaire of HRQOL. Conclusions: The MA II Taiwan version is an obesity-specific questionnaire for QOL evaluation with satisfactory reliability and validity. It has the advantages of extensive evaluation for HRQOL, cross-cultural application, rapid completion, high response rates, and an advanced scoring system.
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U2 - 10.1007/s11695-009-9813-y
DO - 10.1007/s11695-009-9813-y
M3 - Article
C2 - 19255812
AN - SCOPUS:78449282254
SN - 0960-8923
VL - 20
SP - 1568
EP - 1574
JO - Obesity Surgery
JF - Obesity Surgery
IS - 11
ER -