interpret results 1. The SPSS results are below. Briefly, because the Levine's test is not significant (p = .395), we can conduct a three-way ANOVA. From the Tests of Between- Subjects Effects, we see that maternal race/ethnicity is significantly associated with birth weight. From the Bonferroni post hoc test, we see that Black/African Americans have a significantly lower mean birth weight (2,440.25 g) compared to Whites/Caucasians (3,485.87 g) and Hispanics (3,399.33 g). In addition, we found significant interaction between maternal age and smoking (p = .007)