Factor Analysis of the Zung Self-Rating Depression Scale in a Large Ambulatory Oncology Sample

Passik, Steven D.; Lundberg, Jeremy C.; Rosenfeld, Barry; Kirsh, Kenneth L.; Donaghy, Kathleen; Theobald, Dale; Lundberg, Elizabeth; Dugan, William

doi:10.1176/appi.psy.41.2.121

Cited by 85 publications

(69 citation statements)

References 13 publications

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“…Our results suggest that in this sample of patients with nonorophagic cancers, eating ability, eating appetite, and eating enjoyment were positively associated with the overall, physical and functional aspect of QoL, remaining so even after adjusting for major clinical variables, pain, and depression. These results are in line with prior reports [11,12], indicating that changes in eating may not be disease specific. It is well known that systemic effects of malignancy commonly impact eating in cancer patients regardless of cancer site, but this is generally not considered in QoL instruments.…”

Section: Discussionsupporting

confidence: 92%

“…Eating dysfunction is prevalent among lung cancer patients [9,10], while change of appetite predicted higher severity of depression among patients with cancers that directly (e.g., stomach, H&N, esophagus) and indirectly (e.g., lung, breast, colon, and pancreas) influenced eating ability [11]. Eatingrelated somatic symptoms emerged as an independent factor underlying depressive symptoms in ambulatory cancer patients [12]. Among Chinese nasopharyngeal cancer patients, eating ability significantly predicted QoL [13].…”

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confidence: 98%

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Eating ability predicts subsequent quality of life in Chinese patients with breast, liver, lung, or nasopharyngeal carcinoma: A longitudinal analysis

Wong

Fielding

2008

Acta Oncologica

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Section: Discussionsupporting

confidence: 92%

mentioning

confidence: 98%

Eating ability predicts subsequent quality of life in Chinese patients with breast, liver, lung, or nasopharyngeal carcinoma: A longitudinal analysis

Wong

Fielding

2008

Acta Oncologica

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“…The SDS items formed two factors in the present study, covering 'cognitive depressive symptoms' and 'somatic and affective depressive symptoms'. This factor structure is very similar to Zung's classification of the items according to their content [20] and to the factor solutions obtained by other authors [31,32].…”

Section: Discussionsupporting

confidence: 87%

Relationship and Differential Validity of Alexithymia and Depression: A Comparison of the Toronto Alexithymia and Self-Rating Depression Scales

Müller

Bühner²,

Ellgring³

2003

Psychopathology

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Theoretically, the constructs of alexithymia and depression share many common characteristics. Empirically moderate correlations between measures of alexithymia and depression have been found, hence it has been argued that the Toronto Alexithymia Scale (TAS) may be, at least in some part, just another measure for depression. The purpose of this study was to evaluate the construct validity of alexithymia and to analyze the relationship between alexithymia and depression. Exploratory and confirmatory factor analyses were conducted on the combined items of the TAS-20 and the Self-Rating Depression Scale (SDS) in a psychosomatic and alcoholic inpatient sample (n = 199) and a sample of normal adults (controls, n = 174). The exploratory factor analysis in the patient sample yielded a 4-factor structure. Within each factor there was no overlap between the items of the TAS-20 and the SDS. Two factors were comprised of items of the TAS-20 and two factors consisted of items of the SDS. This 4-factor model also showed an acceptable fit for the data of the normal sample in a confirmatory factor analysis. Moderate correlations between the TAS- 20 and SDS total scores and some factors were found. Both instruments, the TAS-20 and the SDS, seem to measure distinct constructs and are not just different measures for the same underlying construct. This provides support for the differential validity of the alexithymia and depression constructs and is in accordance with previous findings.

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“…The authors stated that the Zung Self-Rating scale has 5% more false-positive depressed cancer patients when somatic items are included. 24 After a factor analyses of the Zung Self-Rating depression scale, Passik et al 27 found that fatigue is the only somatic item that is typically a symptom of depression in cancer patients; this is in contrast with the results of Visser and Smets, 25 who found no relationship between depression and fatigue. They stated that fatigue is not a valid criterion for depression for patients after radiation therapy.…”

mentioning

confidence: 93%

Measuring Somatic Symptoms With the CES–D to Assess Depression in Cancer Patients After Treatment: Comparison Among Patients With Oral/Oropharyngeal, Gynecological, Colorectal, and Breast Cancer

et al. 2006

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Measuring somatic symptoms with the CES-D to assess depression in cancer patients after treatment van Wilgen, C.P.; Dijkstra, P.U.; Stewart, R.E.; Ranchor, A.V.; Roodenburg, J.L.N. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum.

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Factor Analysis of the Zung Self-Rating Depression Scale in a Large Ambulatory Oncology Sample

Cited by 85 publications

References 13 publications

Eating ability predicts subsequent quality of life in Chinese patients with breast, liver, lung, or nasopharyngeal carcinoma: A longitudinal analysis

Eating ability predicts subsequent quality of life in Chinese patients with breast, liver, lung, or nasopharyngeal carcinoma: A longitudinal analysis

Relationship and Differential Validity of Alexithymia and Depression: A Comparison of the Toronto Alexithymia and Self-Rating Depression Scales

Measuring Somatic Symptoms With the CES–D to Assess Depression in Cancer Patients After Treatment: Comparison Among Patients With Oral/Oropharyngeal, Gynecological, Colorectal, and Breast Cancer

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