The current study formulated a CFA model (i.e., modified one-factor model) of DASS-21, which yielded factor loading values over β = 0.70 and estimated a latent variable of Psychological Distress by employing indicators of Depression, Anxiety, and Stress.
These results support the psychometric properties of the DASS-21 Depression and Anxiety scales when measuring psychological distress in cancer patients.
The ICECAP-A was collected alongside instruments used to measure: 1. depression using the depression scale of the Depression, Anxiety and Stress Scale (DASS-D of DASS-21); 2. mental health using the Kessler Psychological Distress Scale (K10); 3. generic health status using a common measure collected for use in economic evaluations, the five level version of EQ-5D (EQ-5D-5L).