The Czech version of the life satisfaction index for the third age-short form (LSITA-SF12): Psychometric properties

Evaluation of life satisfaction of older people using standardised tools can play a crucial role in evaluating the effectiveness of policy measures aimed at mitigating the effects of population aging.

The aim of the study was to verify the psychometric properties of the Czech version of a 12-item scale (the Life Satisfaction Index for the Third Age) for older people living in the community.

The research involved 1113 older people from the Moravian-Silesian Region over 60 years of age living in a home environment. For the newly created Czech version of LSITA-SF12, we tested validity (construct validity and convergent validity) and reliability (internal consistency).

We confirmed a single-factor model for the LSITA-SF12 scale (χ²  = 71.33, p <  .001, CFI = 0.995, TLI = 0.994, RMSEA = 0.065, SRMR = 0.056, GFI = 0.999) by confirmatory factor analysis and load factor analysis (values of explorations ≥0.45). The internal consistency of the scale was satisfactory (α = 0.878). Furthermore, there was a medium correlation rate (r = 0.592; p <  .001) between the overall score of the LSITA-SF and quality-of-life score (OPQoL-Brief).

We found the Czech version of the LSITA-SF12 questionnaire to have satisfactory psychometric properties. The questionnaire is suitable for use in research and clinical practice to evaluate the effectiveness of preventive measures.

ClinicalTrials.gov. PRS Protocol Registration and Results System; NCT05637177.

The LSITA_SF12 questionnaire can beadministered by a community gerontological nurse and can be used in clinicalpractice and research.