Table 1.
Demographic characteristics of participants. Standard deviation in parentheses.
| (a) Participants with standardized test data available
| ||||
|---|---|---|---|---|
| FFW-LI | FFW-TD | NoTx Control | P | |
| N | 7 | 9 | 13 | - |
| # Male / # Female | 5 / 2 | 2 / 7 | 6 / 7 | - |
| Age | 7.5 (.7) | 7.6 (.7) | 7.7 (.7) | ns |
| Maternal Educationa | 4.7 (.5) | 5.0 (1.2) | 5.3 (.9) | <.01c |
| Familial SESb | 35 (13) | 42 (9) | 44 (12) | ns |
| (b) Participants with electrophysiological data available
| ||||
| FFW-LI | FFW-TD | NoTx Control | P | |
|
| ||||
| N | 7 | 9 | 11 | - |
| # Male / # Female | 5 / 2 | 4 / 5 | 5 / 6 | - |
| Age (in years) | 7.2 (.9) | 7.6 (.8) | 7.8 (.8) | ns |
| Maternal Educationa | 5.1 (.9) | 5.0 (.7) | 5.7 (.8) | ns |
| Familial SESb | 39 (16) | 42 (10) | 42 (12) | ns |
Level of maternal education measured using categories from the Hollingshead Index of Social Status (Hollingshead, 1975). Values range from 1 (less than 7th grade) to 7 (graduate professional training). A score of 4 indicates high school graduation, and a score of 5 represents partial college.
Familial socio-economic status (SES) measured using the Hollingshead Index of Social Status. Scores on the index represent one of five social strata corresponding to upper (55–66), upper-middle (40–54), middle (30–39), lower-middle (20–29), or lower (8–19) class.
Post-hoc Tukey’s tests indicated that maternal education in the FFW-LI group was significantly lower than the NoTx control group (P < .01). No other between-group differences were statistically significant (all P > .1)