Abstract
The Satisfaction with Life Domains Scale as an instrument for assessing quality – a psychometric evaluation
- Department of Psychiatry I, Institute of Psychiatry and Neurology, Warsaw, Poland
Introduction
Basic indices of reliability, validity, and feasibility of the Polish language version of the Satisfaction with Life Domains Scale (SLDS) were assessed – this is one of the self-assessment measures of the subjective quality of life.
Methods
The combined database included 1,246 people from previous studies on stigma (n = 316) and recovery (n = 110), and individuals seeking psycho-social support (n = 820). Apart from SLDS, other measures of life functioning, experiences of stigma and discrimination, factors of personal recovery, and self-rated and clinician-rated psychopathology were used.
Results
The SLDS results were characterized by a good item performance and high internal consistency (α = 0.92). Significant improvement in life satisfaction was noted, while maintaining some correlational stability in the re-test. Satisfaction with life did not depend on gender, education and age, but on diagnostic qualification (mental problems < somatic diseases) and methodological qualification (patients > persons seeking support). The direction and strength of the correlation of SLDS scores with a number of social, personal and clinical variables supports its theoretical validity, as does the principal components analysis indicating both the value of a one- and three-dimensional solution (satisfaction with social conditions, living conditions and interpersonal relationships). The feasibility of SLDS is also indicated by the low frequency (< 2.8%) of no responses in the surveyed population.
Conclusions
The basic psychometric indicators of the Polish language version of the SLDS confirm its satisfactory reliability and validity as well as a sufficient level of feasibility for various clinical and research aims.
Keywords
psychometric evaluation, subjective quality of life, Satisfaction with Life Domains Scale
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