marginally significantp = 0.06
The linear association between the age and the EEB was marginally significant ( R 2 = 0.03, F (1,111) = 3.65, p = 0.06, AIC = 141.46) whereas the quadratic association between age and EEB was significant ( R 2 = 0.07, F (2,110) = 4.08, p = 0.02, AIC = 139.14) and explained 4% of the variance more than the linear model.