Relationship of depression and sleep quality, diseases and general characteristics

Figure 1 Comparison of the 9 items of Patient Health Questionnaire-9 in the without depression group and with depression group.

Figure 2 The contributing rate of 9 items of Patient Health Questionnaire-9 to depression (%).

Figure 3 The correlation coefficient of the 9 items of Patient Health Questionnaire-9.

Figure 4 The mean Pittsburgh sleep quality index score. The mean Pittsburgh sleep quality index score in the without depression group (n = 190), mild (n = 139), moderate (n = 49), moderately severe depression (n = 22), and severe depression (n = 11) was 8.58, 10.63, 11.61, 13.41 and 15.00. PSQI: Pittsburgh sleep quality index.

Figure 5 The percentage of Pittsburgh sleep quality index group. The percentage of Pittsburgh sleep quality index group in without depression group (n = 190), mild (n = 139), moderate (n = 49), moderately severe depression (n = 22), and severe depression (n = 11).