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THU0594 Developing the korean leeds satisfaction questionnaire (KOREAN-LSQ) in rheumatoid arthritis: a cross-cultural validation using rasch analysis
  1. S-K Cho1,
  2. D Kim1,
  3. SJ Cha1,
  4. D Yoo1,
  5. S-H Kim2,
  6. J Hill3,
  7. M Ndosi4,
  8. Y-K Sung1
  1. 1Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul
  2. 2Department of Measurement and Evaluation of Physical Education, Chungbuk National University, Cheongju, Korea, Republic Of
  3. 3Harrogate, Harrogate
  4. 4Centre for Health and Clinical Research, University of the West of England, Bristol, United Kingdom

Abstract

Background The Leeds Satisfaction Questionnaire (LSQ)1 is a patient-completed questionnaire designed to measure satisfaction among patients attending a rheumatology outpatient clinic. It was originally developed in the UK and it comprises 45 items grouped into 6 subscales: general satisfaction, information, empathy, technical competence, attitude, access and continuity.

Objectives To undertake cross-cultural adaptation and validation of the LSQ in RA for use in Korea.

Methods The adaptation of the LSQ from English into Korean was established according to guideline of cross-cultural adaptation of self-report measures.2 Patients with RA were then recruited from an outpatient clinic of a university hospital in South Korea and Cross-cultural validation of the Korean-LSQ was carried out by Rasch analysis using the WINSTEPS program. Model data fit was determined by Infit and Outfit statistics (≥0.50 and ≤1.50). If the values of the Infit and Outfit are 1.00, the observed score perfectly fit the expected model. The unidimensionality of the scale was determined by separation index (SI ≥2.00) and reliability (RI ≥0.80).

Results An adequate conceptual equivalence was achieved following the adaptation process. The dataset for validation comprised 125 patients, 103 (82.4%) of whom were female, mean (SD) age =47.2 (12.5) and disease duration =52.8 (69.4) months. Forty-item of the 45 items had acceptable fit statistics (individual item data not shown). The individual items overall had good separation index and reliability (SI =5.98 and RI =0.97). Analysis of the 6 subscales of the Korean-LSQ resulted in good fit to the Rasch model (Table 1), high internal consistency and unidimensionality (Person SI =2.31 and RI =0.84; item SI =5.44 and RI =0.97).

Table 1.

Fit statistics for testlets

Conclusions Fit to the Rasch model confirmed that the construct validity, reliability, and unidimensionality of the Korean-LSQ were preserved after the adaptation process. The Korean LSQ is a valid and reliable tool for measuring satisfaction with care among patients with RA in South Korea.

References

  1. Hill J, et al. Survey of satisfaction with care in a rheumatology outpatient clinic. Ann Rheum Dis. 1992; 51(2): 195–7.

  2. Beaton DE, et al. Guidelines for the process of cross-cultural adaptation of self-report measures. Spine. 2000; 25(24): 3186–91.

References

Acknowledgements This research was supported by a grant from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI16C0061).

Disclosure of Interest None declared

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