Table 2 Baseline characteristics for the intervention and control groups.
Variable | Exposure (n = 19) | Control (n = 20) | Statistic (Student’s t or X2) |
|---|---|---|---|
Age (months) mean (SD) | 23.06 (2.06) | 23.25 (1.91) | t(37) = −0.30, p = 0.766 |
Length of exposure (days) mean (SD) | 13.63 (1.30) | 13.95 (2.84) | t(37) = −0.45, p = 0.658 |
MCDI^ words produced mean (SD) | 173.2 (167.7) | 187.6 (144.9) | t(37) = −0.29, p = 0.775 |
Hours TV / DVDs per week mean (SD)* | 4.75 (6.33) | 7.25 (4.06) | t(25.76) = −0.85, p = 0.402 |
Minutes gaming per week mean (SD) | 31.68 (45.7) | 54.25 (108.9) | t(37) = −0.61, p = 0.545 |
Gender male: female | 11: 8 | 10: 10 | X2 (1) = 0.244, p = 0.621 |
Ethnicity white: other | 16: 3 | 17: 3 | X2 (1) = 0.292, p = 0.589 |
Maternal education Graduate: non-graduate | 16: 3 | 19: 1 | X2 (1) = 1.232, p = 0.267 |
Siblings Zero: one: two or more | 10: 4: 5 | 8: 11: 1 |
