Death and life expectancy of residents in coal-burning-borne arsenic poisoning area of Yuzhang Town, Xingren City, Guizhou Province after comprehensive prevention and control of the disease / 中华地方病学杂志

ABSTRACT

Objective:To understand the overall health status of residents in coal-burning-borne arsenic poisoning areas in Yuzhang Town, Xingren City, Guizhou Province after the implementation of comprehensive prevention and control measures, and to provide references for formulating endemic arsenic poisoning prevention strategies in the new era.Methods:Yuzhang Town, Xingren City of Qianxinan Autonomous Prefecture, Guizhou Province was selected as the survey site. According to the "Standards for Determination and Classification of Endemic Arsenic Poisoning Areas"(WS 277-2007), eleven administrative villages in Yuzhang Town were divided into 5 arsenic-exposed villages and 6 non-arsenic-exposed villages. The basic population data of each administrative village were collected, and the changes of mortality rate, standardized mortality rate, average age of death and life expectancy of residents in the whole town, arsenic-exposed villages and non-arsenic-exposed villages from 2006 to 2018 were calculated and analyzed.Results:From 2006 to 2018, the average annual mortality in arsenic-exposed villages was 597.28/100 000 (756.62/100 000 for males and 432.91/100 000 for females), which was higher than that in non-arsenic-exposed villages (503.79/100 000, 600.82/100 000 for males and 405.02/100 000 for females). Using the overall gender composition of the town as criterion, the standardized mortality rate for arsenic-exposed villages and non-arsenic-exposed villages were 598.79/100 000 and 503.04/100 000, respectively. The population mortality rate in the town showed a downward trend from 2006 to 2018, and the mortality rate of residents in arsenic-exposed villages was higher than that of non-arsenic-exposed villages. The annual mortality rate of males was higher than that of females. From 2006 to 2018, the average age of death in the town increased year by year, from 53.93 years old in 2006 to 67.11 years old in 2018. Among them, the age of death of arsenic-exposed villages was increased from 55.22 years old to 65.17 years old, and non-arsenic-exposed villages increased from 52.64 years old to 68.93 years old. The life expectancy of males, females and total in arsenic-exposed villages (66.29, 75.65, 70.33 years in 2006 and 79.38, 86.39, 83.01 years in 2018) were lower than those in non-arsenic-exposed villages (69.86, 80.77, 74.50 years in 2006 and 83.25, 91.85, 87.25 years in 2018).Conclusion:After the comprehensive prevention and control measures are fully covered in the coal-burning-borne arsenic poisoning area, the health level of the residents in the town is significantly improved, but the long-term health effect, disease distribution, disease burden and other issues of the residents in the arsenic poisoning area are still need to be paid attention to.