Table 1.
Comparison of the characteristics of children included and excluded from BPA–CBCL analyses.
| Variable | Subjects in the analysis (n = 198) | Subjects not includeda (n = 159) | n | p-Value | ||||
|---|---|---|---|---|---|---|---|---|
| Prenatal BPA urinary concentration (μg/L) | 1.96 (3.12)b | 2.09 (5.20)b | 159 | 0.089 | ||||
| 3-year BPA urinary concentration (μg/L) | 3.94 (10.93)b | 4.29 (8.22)b | 54 | 0.894 | ||||
| Prenatal mono-n-butyl phthalate concentration (μg/L) | 63.42 ± 97.34 | 64.92 ± 77.56 | 146 | 0.874 | ||||
| Age at assessment (months) | 38.27 ± 5.24 | 37.98 ± 6.84 | 142 | 0.673 | ||||
| Percent with prenatal ETS exposure | 33.84 | 22.64 | 159 | 0.020 | ||||
| Percent female | 56.06 | 49.69 | 159 | 0.230 | ||||
| Percent ≥ high school education | 58.59 | 63.52 | 159 | 0.342 | ||||
| Percent African American | 36.87 | 32.70 | 159 | 0.412 | ||||
| Gestational age at birth (weeks) | 39.36 ± 1.25 | 39.19 ± 1.30 | 159 | 0.210 | ||||
| Maternal TONI score | 19.83 ± 8.94 | 19.88 ± 7.99 | 131 | 0.958 | ||||
| HOME inventory | 39.69 ± 6.34 | 39.10 ± 6.18 | 134 | 0.401 | ||||
| Maternal demoralization score | 1.09 ± 0.63 | 1.12 ± 0.64 | 157 | 0.693 | ||||
| Values are mean ± SD or percent. aA total of 361 children had prenatal BPA measurements and maternal prenatal questionnaire data. Some subjects were not included in the analysis due to missing CBCL data (n = 24), measurement of postnatal BPA (n = 86), or missing information on at least one other covariate (n = 49). bThe means for prenatal and 3-year BPA are geometric means. | ||||||||