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Subgrouping outpatients of an environmental medicine unit using SCL-90-R and cluster analysis.

Abstract：

:Between 1999 and 2003 all consecutive outpatients of the environmental medicine unit of the Charité hospital in Berlin were invited to participate in a study on environmentally related disorders. One hundred and sixty-nine of the patients completed a psychosocial questionnaire which comprised SCL-90-R and 14 other tests. When compared with clinical controls, SCL-90-R mean scores of the environmental patients (EP) were found to lie in between those of inpatients of a psychosomatic clinic and melanoma aftercare patients; but they were, with exception of the somatisation dimension, much closer to the latter. Application of the TwoStep Cluster component of SPSS resulted in three subgroups with high, moderate and low scores which were significantly different (p<0.001) although separation was incomplete (87% correct identification; cross-validated discriminant analysis). With all subgroups, scores for somatisation, depression and obsessive compulsion were highest and those for phobic anxiety and psychoticism were lowest. SCL-90-R scores correlated well with results of the Freiburg Personality Inventory, Whiteley Index of hypochondriasis, the short form health questionnaire (SF-36), and the Composite International Diagnostic Interview (CIDI). Hierarchical grouping (average linkage between groups), performed with involvement of SCL-90-R data from literature, resulted in a dendrogram with three distinct groups and three outliers. EP with low SCL-90-R scores were assigned to a group which comprised also general populations (USA, Germany), allergy patients, and melanoma controls. Those with moderate SCL-90-R scores were placed in a group together with chronic pain patients, and 26 'environmentally ill' subjects. The third subgroup of EP formed a cluster with our psychosomatic controls, psychosomatic patients from another study, depressed people, and patients undergoing psychotherapy. The three outliers of the dendrogram, however, were SCL-90-R profiles obtained from persons with toxic waste exposure, neurotoxic workplace exposure or with solvent-induced chronic toxic encephalopathy.

journal_name

Int J Hyg Environ Health

journal_title

International journal of hygiene and environmental health

authors

Helm D,Eis D

doi

10.1016/j.ijheh.2006.11.006

subject

Has Abstract

pub_date

2007-12-01 00:00:00

pages

701-713

issue

eissn

1438-4639

issn

1618-131X

pii

S1438-4639(06)00114-3

journal_volume

210

pub_type

杂志文章

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Subgrouping outpatients of an environmental medicine unit using SCL-90-R and cluster analysis.