Assessing illness-related stress in psoriasis: The psychometric properties of the Psoriasis Life Stress Inventory

The purpose of the present study was to undertake a clinical and psychometric reappraisal of the Psoriasis Life Stress Inventory (PLSI). Total PLSI score was inversely related to age of onset of psoriasis, but bore no significant relationship to duration or to clinical severity. Similarly, patients&...

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Bibliographic Details
Published in:Journal of psychosomatic research 1997-05, Vol.42 (5), p.467-475
Main Authors: Fortune, Donal G., Main, Chris J., O'Sullivan, Teresa M., Griffiths, Christopher E.M.
Format: Article
Language:English
Subjects:
Adaptation, Psychological
Adolescent
Adult
Age of Onset
Aged
Attitude to Health
Biological and medical sciences
Cost of Illness
Cross-Sectional Studies
Dermatology
England
Factor Analysis, Statistical
Female
Fundamental and applied biological sciences. Psychology
Humans
Illness and personality
Illness, stress and coping
Male
Medical sciences
Middle Aged
Psoriasis
Psoriasis - complications
Psoriasis - psychology
Psoriasis. Parapsoriasis. Lichen
Psychology and medicine
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychometric evaluation
Psychometrics - methods
Psychometrics - standards
Psychosocial effects
Rejection (Psychology)
Reproducibility of Results
Severity of Illness Index
Social Perception
Stigma
Stress
Stress, Psychological - diagnosis
Stress, Psychological - etiology
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Summary:The purpose of the present study was to undertake a clinical and psychometric reappraisal of the Psoriasis Life Stress Inventory (PLSI). Total PLSI score was inversely related to age of onset of psoriasis, but bore no significant relationship to duration or to clinical severity. Similarly, patients' stress score did not differ with regards to the nature of their current treatment, to their beliefs as to what was responsible for exacerbation or improvement of their condition, or to the patients' gender. Factor analysis extracted two factors which suggested that the psychosocial impact of psoriasis results from stress associated with: (i) engaging in anticipatory/avoidance coping behavior that is effected to limit the sociocognitive intrusiveness of psoriasis; and (ii) stress resulting from patients' beliefs or actual experiences of being evaluated by others solely on the basis of their skin. The internal reliability of the scale can be improved by the deletion of three items. Revision of the PLSI is recommended to render it psychometrically and clinically acceptable for use in the UK.
ISSN:0022-3999
1879-1360
DOI:10.1016/S0022-3999(97)00036-6