Figure 1
From: Sleep disturbance-related depressive symptom and brain volume reduction in shift-working nurses
Statistically significant differences in (A) sleep disturbance and (B) depressive symptom between shift-working nurses and day-working nurses. A bar and an error bar, respectively, represent the mean and standard deviation of data points, which are represented as dots, along with a normal distribution curve fitted to them. A horizontal dotted line indicates a boundary above which significant sleep disturbance is supposed in (A) and depressive symptom beyond the normal range is supposed in (B).
