Table S4. Burden of disease from lead exposure in Chinese population aged 3–5 years old measured in 2000 and 2017/18.

Year	No. of participants	Blood lead geometric mean, μg/L	Incidence of mild mental retardation (‰)	DALYs (Person-year/1,000 children)	DALYs (Person-year)
Abbreviation: DALYs=disability-adjusted life years.
2000	46,612,176	78.1	13.87	357.4	16,659,509
2017–2018	45,202,983	16.9	0.33	9.0	408,780