Table 1.
Child demographics
| M (SD)/frequency (%) | X 2/F | ||
|---|---|---|---|
| IT (N = 19) | WL (N = 19) | ||
| Gender | |||
| Male | 15 (79%) | 14 (74%) | X 2 (1) = 0.146, p = 0.70 |
| Female | 4 (21%) | 5 (26%) | |
| Ethnicity | |||
| Caucasian | 10 (53%) | 12 (63%) | X 2 (5) = 3.52, p = 0.62 |
| Minority | 9 (47%) | 7 (37%) | |
| Birth order | |||
| Only child | 10 (53%) | 7 (36%) | X 2 (3) = 2.63, p = 0.45 |
| First born | 7 (36%) | 5 (26%) | |
| Second born | 2 (11%) | 2 (11%) | |
| Twin | 0 | 2 (11%) | |
| Missing data | 0 | 3 (16%) | |
| Child chronological age (months) | 30.35 (0.93) | 31.31 (0.90) | F(1,35) = 0.53, p = 0.47 |
| Mullen scales of early learning | |||
| Mental age (months) | 19.83 (1.80) | 18.57 (1.09) | F(1,35) = 0.36, p = 0.55 |
| Developmental quotient | 64.80 (5.35) | 59.81 (3.14) | F(1,34) = 0.61, p = 0.44 |