Table VI.
Mean values for seven reading skill outcomes by nicotine exposure category and dichotomized phonology.
| Prenatal nicotine exposure | None | Low | High | |||
|---|---|---|---|---|---|---|
| Phonology | Low | High | Low | High | Low | High |
| Reading speed | 102.8 | 111.7 | 101.2 | 110.1 | 96.1 | 107.2 |
| Single-word identification | 24.9 | 34.5 | 23.9 | 33.9 | 20.4 | 32.8 |
| Spelling | −0.3 | 0.6 | −0.4 | 0.5 | −0.8 | 0.4 |
| Accuracy | 99.8 | 113.1 | 97.9 | 111.3 | 92.7 | 108.4 |
| Real words reading | 6.9 | 8.9 | 6.7 | 8.7 | 5.6 | 8.5 |
| Nonword reading | 4.5 | 6.5 | 4.4 | 6.7 | 3.8 | 6.4 |
| Comprehension | 98 | 107.1 | 95.9 | 105.2 | 91.1 | 102 |