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The items of depression, distress and vitality were placed into 2 categories (the categories 2 to 5 were dichotomised) among men and the items of eating and speech among women.
Our results were broadly in support of the majority findings in the literature, indicating that the multi-domain structure of the BDI-II is robust, the bifactor model is the best representation of the relationship between the items of depression, and the psychometric characteristics of the BDI-II are adequate.
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But we failed to proof its predictive performance by logistic regression analysis suggested by the above study in using separate CSPS items or total score alone to predict 6-month repetition, as we found only the item of Depression could predict future self-harm risk rather than many other items (data shown on request).
The items of the depression scale focus on low mood, low self-esteem and poor outlook for the future.
The items, obtained on the basis of factor analysis and comparison with the items of the depression subscale of the 28-item GHQ (20), are "thinking of yourself as a worthless person," "felt life is entirely hopeless," "felt life isn't worth living," and "found at times you couldn't do anything because your nerves were too bad".
The test-retest correlations from admission to discharge of the NPI-21 and its subscales were higher than those observed for the BPRS total and its subscales (except for Thinking disturbance), the BPRS items of depression and suicidality and the HADS-A and the HADS-D.
In order to explore the stability of the observed correlations, we also checked the partial correlations of the NPI-21 and its subscales with the BPRS items of depression, suicidality and grandiosity at discharge (N = 147).
For the BPRS items of depression, suicidality and grandiosity the correlations ranged from 0.63 to 0.74.
The BPRS items of Depression and Suicidality showed significant, negative association with the NPI-21 total score and all the factor scores.
Age differences existed in three of the nine items of depression stigma and three different trends emerged.
Items from the Mandarin Chinese Cardiac Depression Scale form a Mokken scale and this offers further insight into how the items of the Cardiac Depression Scale relate to the measurement of depression in people with a myocardial infarction.
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