Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
IQ and SC in different water As groups
| Variable | IQ percentile (mean ± SD) | SC score (mean ± SD) |
|---|---|---|
| Water As (μg/L) | ||
| Groups | ||
| L1 (n = 120) | 52.2 ± 21.4b | 38.6 ± 5.6b |
| L2 (n = 44) | 43.4 ± 22.6a | 37.6 ± 7.6a, b |
| L3 (n = 52) | 44.0 ± 22.6a | 36.1 ± 9.0a |
| L4 (n = 96) | 40.7 ± 22.3a | 35.9 ± 6.5a |
Values with different letters within the same column are statistically different
