Fig. 1From: Distinct developmental trajectories of health-related quality of life for boys and girls throughout childhood and adolescence; a national level longitudinal studyTrajectories of HRQoL for the total sample (a), boys (b) and girls (c). Figure 1 shows the 3-group trajectory models for children aged 4–5 years through to 16–17 years. Trajectories are modelled for the total sample (a), and separately for boys (b) and girls (c). HRQoL = health-related quality of lifeBack to article page