Fig. 5

In the non-lead-exposed group, subgrouping analysis was performed on the basis of the sex of the population. (c)Low lead exposure.(d) Controls. (e) Uygur population group. (f) Han population group. (g) Non-Hispanic Whites. (h) Non-Hispanic Blacks. (i) Mexican Americans. (j) ALS patients. (k) Individuals without ALS. CI: confidence interval, DL: DerSimonian‒Laird.