THE HOSPITAL ANXIETY AND DEPRESSION SCALE: HOMOGENEITY OF THE SUBSCALES

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Abstract
The H.A.D.-scale was originally used as a screening test for assessing the presence of clinically significant degrees of anxiety and depression. It has also been used as a measuring instrument outside hospital care. The main questions in this study are: l) Do the test items fit a sample of non-clinical persons? 2) Are the two subscales of Depression and Anxiety homogeneous? In total 163 persons answered the questionnaire. Two factor analyses are reviewed, a two factor solution and a four factor solution. The two factor solution did not split the items in the way originally intended. A four factor analysis with three interpreted factors gave a better solution. The analysis leads us to recommend great caution when interpreting the H.A.D.-scale, especially when used in a population outside of hospital care.

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