Age-dependent changes in the association between sleep duration and impaired glucose metabolism

Figure 3 Relationship between HbA1c levels and sleep duration according to age and sex. Each point and vertical bar represent the mean ± SE. P values for ANOVA were < 0.0001, 0.0001, 0.002, and 0.56 for young men, young women, older men, and older women, respectively. The corresponding number of subjects is shown in the side of the bar.