Estimation method of health-adjusted life expectancy of adults in Zhejiang province, 2019

  Objective  Compare the calculation results of health-adjusted life expectancy(HALE) of different health definitions (WHO questionnaire, EQ-5D scale and global burden of disease study).

  Methods  In this study, the self-reported health data and mortality data of adult residents in Zhejiang province in 2019 were collected. Based on the before and after CHOPIT adjustment WHO questionnaire, EQ-5D questionnaire and the Zhejiang data of the 2019 global disease burden study (GBD 2019), the HALE was calculated and compared.

  Results  The proportion of “no difficulty” in each dimension of WHO questionnaire respondents was basically more than 70.00%, and the dimension of self-care ability has reached more than 90.00%; The proportion of respondents who answered “healthy” in each dimension of the EQ-5D scale was more than 85.00%. After correction, the top effect of WHO's self-reported health level has been greatly improved, the life expectancy of adults in Zhejiang province was 64.44 years, the HALE after correction was 46.59 years. The HALE calculated by EQ-5D was 53.27 years, and the HALE calculated by GBD data was 55.55 years.

  Conclusion  The results calculated by different methods are inconsistent, and there is an obvious top effect in the measurement method of the questionnaire. After correction by scenario simulation method, it can greatly reduce the top effect of WHO questionnaire, which is a better method to calculate more accurate health life expectancy.