Journal of psychosomatic research
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the hospital anxiety and depression scale (HADS) attempts to measure anxiety and depression without confounding by somatic symptoms of physical disorder, and is widely used for this purpose. This paper addresses three questions about the validity of the HADS concerning its independence of physical symptoms, the extent to which its items robustly measure the identified constructs with varying clinical populations and situations, and its capacity to differentiate anxiety and depression. ⋯ there was support for the validity of the HADS for all three questions. However, there were some evidences of individual items performing poorly. Given the ease of administration and the acceptability of this measure to ill or weak respondents, the HADS continues to perform satisfactorily.