Fig. 1
From: Sleep and BMI in South African urban and rural, high and low-income preschool children
Average (a), week (b) and weekend (c) 24 h sleep durations for the RL (n = 111), UL (n = 65) and UH (n = 22) groups. Individual data points and mean ± SD are presented. Dotted lines at 10 h and 13 h represent the recommended sleep duration range for preschoolers. Solid lines indicate post hoc differences between groups following a one-way ANOVA. RL: Rural low-income group; UL: Urban low-income group, UH: Urban high-income group