Lang Zhuo1, Ling Xu2, Jingtao Ye3, Sun Sun4, Yaoguang Zhang2, Kristina Burstrom5, Jiaying Chen6. 1. School of Health Policy and Management, Nanjing Medical University, Nanjing, Jiangsu, China; School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu, China. 2. Center for Statistics and Information, National Health and Family Planning Commission, Beijing, China. 3. School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu, China. 4. Health Outcomes and Economic Evaluation Research Group, Stockholm Centre for Healthcare Ethics, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Stockholm, Sweden; Division of Epidemiology and Global Health, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden. 5. Health Outcomes and Economic Evaluation Research Group, Stockholm Centre for Healthcare Ethics, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Stockholm, Sweden; Equity and Health Policy Research Group, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden; Center for Health Policy Studies, Nanjing Medical University, Nanjing, Jiangsu, China. 6. School of Health Policy and Management, Nanjing Medical University, Nanjing, Jiangsu, China; Center for Health Policy Studies, Nanjing Medical University, Nanjing, Jiangsu, China. Electronic address: jychen@njmu.edu.cn.
Abstract
OBJECTIVES: To obtain a nationally representative Chinese three-level EuroQol five-dimensional questionnaire value set based on the time trade-off (TTO) method. METHODS: A multistage, stratified, clustered random nationally representative Chinese sample was used. The study design followed an adapted UK Measurement and Valuation of Health protocol. Each respondent valued 11 random states plus state 33333 and "unconscious" using the TTO method in face-to-face interviews. Three types of models were explored: ordinary least squares, general least squares, and weighted least squares models. RESULTS: In total, 5939 inhabitants aged 15 years and older were interviewed. Of these, 5503 satisfactorily interviewed participants were included in constructing models. An ordinary least squares model including 10 dummies without constant and N3 had a mean absolute error of 0.083 and a correlation coefficient of 0.899 between the predicted and mean values. Goodness-of-fit indices of two models based on split subsample were similar. CONCLUSIONS: TTO values were higher in our study compared with those in a study carried out in urban areas, which is mirrored by the higher values in rural areas. Several other aspects, in addition to the valuation procedure, might have influenced the results, such as factors beyond demographic factors such as view on life and death and believing in an afterlife, which need further investigation. Future studies using the three-level EuroQol five-dimensional questionnaire should consider using this value set based on a nationally representative sample of the Chinese population.
OBJECTIVES: To obtain a nationally representative Chinese three-level EuroQol five-dimensional questionnaire value set based on the time trade-off (TTO) method. METHODS: A multistage, stratified, clustered random nationally representative Chinese sample was used. The study design followed an adapted UK Measurement and Valuation of Health protocol. Each respondent valued 11 random states plus state 33333 and "unconscious" using the TTO method in face-to-face interviews. Three types of models were explored: ordinary least squares, general least squares, and weighted least squares models. RESULTS: In total, 5939 inhabitants aged 15 years and older were interviewed. Of these, 5503 satisfactorily interviewed participants were included in constructing models. An ordinary least squares model including 10 dummies without constant and N3 had a mean absolute error of 0.083 and a correlation coefficient of 0.899 between the predicted and mean values. Goodness-of-fit indices of two models based on split subsample were similar. CONCLUSIONS: TTO values were higher in our study compared with those in a study carried out in urban areas, which is mirrored by the higher values in rural areas. Several other aspects, in addition to the valuation procedure, might have influenced the results, such as factors beyond demographic factors such as view on life and death and believing in an afterlife, which need further investigation. Future studies using the three-level EuroQol five-dimensional questionnaire should consider using this value set based on a nationally representative sample of the Chinese population.
Authors: Juan Zhu; Xin-Xin Yan; Cheng-Cheng Liu; Hong Wang; Le Wang; Su-Mei Cao; Xian-Zhen Liao; Yun-Feng Xi; Yong Ji; Lin Lei; Hai-Fan Xiao; Hai-Jing Guan; Wen-Qiang Wei; Min Dai; Wanqing Chen; Ju-Fang Shi Journal: Qual Life Res Date: 2020-09-15 Impact factor: 4.147
Authors: Shuang Hao; Emelie Heintz; Gert Helgesson; Sophie Langenskiöld; Jiaying Chen; Kristina Burström Journal: Qual Life Res Date: 2019-09-12 Impact factor: 4.147