Fig. 2From: Short stature and language development in the United Kingdom: a longitudinal analysis of children from the Millennium Cohort StudyFour trajectory groups of language development between 3 and 11 years of age (n = 12,536). Note: dots at each timepoint reflect the within-group mean. Lines denote the within-group trajectory. The best model fit was obtained using two linear polynomic functions (groups 1 and 4) and two cubic functions (groups 2 and 3)Back to article page