Table 1.
Concentration of urinary arsenic in early and late gestational periods (GW8 and GW30) among the 2002–2003 pregnancy cohort in Matlab, Bangladesh.
| Statistic | Urinary arsenic concentration (μg/L)a |
Average of GW8 and GW30b | |
|---|---|---|---|
| GW8 | GW30 | ||
| Mean ± SD | 152 ± 175 | 166 ± 196 | 159 ± 163 |
| Median | 79 | 80 | 94 |
| 25th percentile | 36 | 41 | 43 |
| 75th percentile | 210 | 225 | 220 |
| Lowest | 1 | 2 | 6 |
| Highest | 1,211 | 1,440 | 977 |
a
Sum of inorganic and methylated arsenic species.
b
Mean of the two urinary arsenic concentrations (in early and late gestation).