There were no significant
differences between the 12 test groups in the proportions of main vs. joint household grocery purchasing responsibility (F11, 789 = 1.5, p > 0.05),
gender (F11, 789 = 0.6, p > 0.05), age group (F11, 789 = 0.5, p > 0.05), education level (F11, 789 = 1.0, p > 0.05) or household
income (F11, 789 = 0.9, p > 0.05), indicating that randomization to test groups was successful.
However, after controlling family
income, the number of household members,
gender of children, and the level of schooling, the
difference between the children of single mother and of two parent families disappear.
No significant
differences between participants who completed all interviews and those not present for at least one assessment were found for minority status (minority vs. majority), Χ 2 [1, N = 386] = 0.72, p = 0.40, φ = 0.04),
gender, Χ 2 [1, N = 387] = 1.26, p = 0.26, φ = 0.06, age, F [1, 386] = 0.04, p = 0.84, d = 0.03, parental education (some high school or high school graduate, technical school or some college, college degree or beyond), Χ 2 [2, N = 387] = 1.19, p = 0.55, φ = 0.05, marital status (caregiver married vs. not married), Χ 2 [1, N = 387] = 2.48, p = 0.12, φ = 0.08, family
income, F [1, 361] = 1.29, p = 0.26, d = 0.18, lifetime alcohol, Χ 2 [1, N = 387] = 1.82, p = 0.18, φ = 0.07 or cigarette use Χ 2 [1, N = 387] = 0.35, p = 0.55, φ = 0.03, internalizing problems, F [1, 386] = 2.67, p = 0.10, d = 0.24, or externalizing problems, F [1, 386] = 3.74, p = 0.05, d = 0.27.
There were no significant
differences between those who participated at 5 - year follow - up and those that did not on child
gender, maternal anxiety, maternal education, marital status, family
income, ethnicity, or maternal age (p >.05).