Table 3. Analysis of variance (ANOVA) of the relative brain sizes and other parameters at birth.
Degree of freedom | Sum Square | Mean Square | F value | Pr(>F) | |
Genotypes* | 1 | 0.007 | 0.007 | 9.790 | 0.002 |
Length of Pregnancy (week) | 1 | 0.007 | 0.007 | 10.235 | 0.001 |
Body weight (g) | 1 | 0.000 | 0.000 | 0.023 | 0.880 |
Sex | 1 | 0.000 | 0.000 | 0.498 | 0.480 |
Residuals | 1238 | 0.898 | 0.001 |
The genotype CC is compared against HC and HH and a dominant effect is assumed. Among the four variables considered, only the genotype and length of pregnancy in weeks were significant (p value <0.05). The rest of the variables including the body weight in grams and genders, all have p values greater than 0.05, indicating that they were not associated with the relative brain sizes.
Dominant effect is assumed. The genotype CC is compared with HC and HH.