Table 1.
Demographic factors and drinking water arsenic exposures among planned pregnancies and unplanned pregnancies.
| Factor | Planned pregnancies | Unplanned pregnancies | P-value a | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||||||
| n | Mean | Median/% | SD | Min | Max | n | Mean | Median/% | SD | Min | Max | ||
|
|
|||||||||||||
| Time to pregnancy (cycles) | 94 | 8 | 3 | 13.5 | 1 | 72 | - | - | - | - | - | - | - |
| Age (years) | 94 | 29.57 | 28.96 | 5.01 | 18.50 | 42.17 | 193 | 28.78 | 28.08 | 6.28 | 18.08 | 44.25 | 0.20 |
| BMI (kg/m2) | 93 | 22.92 | 22.21 | 3.74 | 16.14 | 36.73 | 192 | 22.28 | 21.20 | 3.89 | 15.06 | 46.61 | 0.07 |
| Urban residence | 68 | -- | 72% | -- | -- | -- | 127 | -- | 66% | -- | -- | -- | 0.28 |
| Married, living as married | 85 | -- | 90% | -- | -- | -- | 152 | -- | 79% | -- | -- | -- | 0.02 |
| Education | |||||||||||||
| University diploma | 55 | -- | 59% | -- | -- | -- | 66 | -- | 34% | -- | -- | -- | 0.001 |
| High school diploma/some college/technical school | 21 | -- | 22% | -- | -- | -- | 71 | -- | 37% | -- | -- | -- | -- |
| No high school diploma | 18 | -- | 19% | -- | -- | -- | 56 | -- | 29% | -- | -- | -- | -- |
| Smoked > 100 lifetime cigarettes | 38 | -- | 40% | -- | -- | -- | 74 | -- | 38% | -- | -- | -- | 0.80 |
| Reproductive history | |||||||||||||
| Prior pregnancies | 60 | -- | 64% | -- | 0 | 6 | 109 | -- | 56% | -- | 0 | 14 | 0.79 |
| Prior pregnancy losses | 48 | -- | 51% | -- | 0 | 3 | 74 | -- | 38% | -- | 0 | 8 | 0.09 |
| History of PID | 16 | -- | 17% | -- | -- | -- | 30 | -- | 16% | -- | -- | -- | 0.86 |
| Drinking water arsenic level | |||||||||||||
| Average (μg/L) | 94 | 4.63 | 0.46 | 18.79 | 0 | 175.10 | 193 | 4.11 | 0.29 | 12.19 | 0 | 130.30 | 0.80 |
| Peak (μg/L) | 94 | 5.55 | 1.11 | 19.04 | 0 | 175.10 | 193 | 4.59 | 0.53 | 12.44 | 0 | 130.30 | 0.56 |
| Daily dose (μg) | 94 | 7.29 | 0.77 | 36.42 | 0 | 350.20 | 193 | 5.75 | 0.44 | 13.44 | 0 | 90.45 | 0.45 |
NOTE: Bold typeface indicates P < 0.05.
a
Wilcoxon rank sum tests test for continuous variables and chi-square test for categorical variables.