From: Sleep quality and its psychological correlates among university students in Ethiopia: a cross-sectional study
Depression
Anxiety
Stress
Normal
0-9
0-7
0-14
Mild
10-13
8-9
15-18
Moderate
14-20
10-14
19-25
Severe
21-27
15-19
26-33
Extremely Severe
28+
20+
34