Table 1.

Demographic characteristics and smoking status of baseline sample (N = 3,157 students who completed baseline survey)

Flavor (multicultural intervention)Chips (standard intervention)Control (school's usual antitobacco programming)Test for pretest equivalence among groups
n1,0509451,162
Mean age (y)11.3411.3211.30F = 1.57, ns
Female (%)52.152.152.4X2 = 1.97, ns
Race/ethnicityX2 = 12.77, ns
    Hispanic (%)57.661.259.2
    Asian-American (%)24.121.623.2
    African-American (%)1.61.00.5
    White (%)6.26.17.8
    Other/multiethnic (%)10.510.39.4
Immigrant family (student and/or parent born outside the United States) (%)72.079.375.5X2 = 14.15, P < 0.001
Median household income in zip code >$40,000 (%)34.228.222.6X2 = 61.61, P < 0.0001
Lifetime smoking prevalence (%)11.110.47.3X2 = 10.06, P < 0.01
Past 30-d smoking prevalence (%)3.32.61.6X2 = 6.87, P = 0.03