Systematic review of the measurement properties of the Depression Anxiety Stress Scales-21 by applying updated COSMIN methodology.
Jiyeon LeeEun Hyun LeeSeung Hei MoonPublished in: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation (2019)
The DASS-21 demonstrated sufficient high-quality evidence for bifactor structural validity, internal consistency (bifactor), criterion validity (Depression subscale), and hypothesis testing for construct validity. Further studies are required to assess the other measurement properties of the DASS-21.