Table 1.
Characteristics of the subjects by group
| Exposure Group
|
||||
|---|---|---|---|---|
| Low
|
High
|
|||
| Mean
|
SD
|
Mean
|
SD
|
|
| Age in months | 102.18 | 3.63 | 100.47 | 4.42 |
| Maternal Education (in yrs) | 16.41 | 3.00 | 17.06 | 1.78 |
| EVT-standard | 107.71 | 6.98 | 105.29 | 5.88 |
| EVT-raw | 93.24 | 9.71 | 88.94 | 8.91 |
| Nonword Repetition | 89.10 | 4.42 | 86.89 | 4.94 |
| KBIT-standard | 116.87 | 17.71 | 116.00 | 18.82 |
| KBIT-raw | 29.40 | 5.84 | 28.35 | 6.57 |
Note. EVT = Expressive Vocabulary Test (Williams, 1997). KBIT = Matrices subtest of the Kaufman Brief Intelligence Test (Kaufman & Kaufman, 2003).