Figure 2

Psychological condition and sleep quality distribution diagram. The blue, red and green bars were used to represent three different levels for SDS, SAS and PSQI scores, respectively. The length of bars stood for the percentage of relevant levels in all aberrant groups, in which Normal/Excellent level was excluded for diagram beautifying. For SDS, Mild, Moderate and Severe groups accounted for 68.21%, 28.75% and 3.04%; for SAS, the proportions were 81.06%, 16.13% and 2.81%; and for PSQI, 80.33%, 18.62% and 1.05% subjects reported their sleep quality as Satisfied, Less Satisfied and Unsatisfied, respectively.