Assessment of the impact of pain on work productivity: validation of the Spanish WPAI:Pain questionnaire

Authors

  • N. Varela Departamento de Anestesiología y Reanimación Hospital San Pedro C/ Piqueras 98 26006 Logroño http://orcid.org/0000-0003-3862-1972
  • F. Guillén-Grima - Servicio de Medicina Preventiva, Clínica Universidad de Navarra, Pamplona - Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona http://orcid.org/0000-0001-9749-8076
  • J. J. Pérez-Cajaraville Unidad Funcional del Tratamiento del Dolor, Grupo Universitario HM Hospitales, Madrid http://orcid.org/0000-0001-7089-8600
  • C. Pérez-Hernández Unidad de Dolor, Hospital Universitario de la Princesa, Madrid
  • P. Monedero - Departamento de Anestesiología y Cuidados Intensivos, Clínica Universidad de Navarra, Pamplona - Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona http://orcid.org/0000-0002-1596-5644

DOI:

https://doi.org/10.23938/S1137-6627/2016000100009

Keywords:

Dolor, Diseño de cuestionario, Validación, Fiabilidad

Abstract

            Background. Health measuring instruments are essential in daily clinical practice. However, a validation process is needed in order to certify the validity and reliability of it. The aim of our study is to validate a questionnaire to assess the consequences of pain in work productivity.

             Methods. Based on the Work Productivity and Activity Impairment Questionnaire - General Health we have created a modified version called WPAI:Pain in order to be able to measure the consequences of pain in work productivity. The study was conducted following the usual guidelines of test validation, omitting face validity as WPAI:Pain is a modification of an existing questionnaire. Validity and reliability were calculated.

             Results. A total of 577 questionnaires were obtained in 2 spanish university hospitals. The questionnaire’s discriminating power was verified by Mann-Whitney test. Reliability tests were realized, Cronbach's alpha was 0.896 and Guttman split-half was 0.921. Stability was evaluated with a test-retest which was significant. Construct validity was established by Pearson correlation comparing the results of the questionnaire with the pain visual analog scale, which was statistically significant for all values.

                Conclusions. The WPAI:Pain questionnaire is a valid instrument for measuring the consequences of pain in work productivity. It is currently the only one validated in Spanish. Major studies are needed in order to establish its universal validity.

             Keywords. Pain. Questionnaire design. Validation. Reliability.

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Published

2016-04-29

How to Cite

Varela, N., Guillén-Grima, F., Pérez-Cajaraville, J. J., Pérez-Hernández, C., & Monedero, P. (2016). Assessment of the impact of pain on work productivity: validation of the Spanish WPAI:Pain questionnaire. Anales Del Sistema Sanitario De Navarra, 39(1), 77–85. https://doi.org/10.23938/S1137-6627/2016000100009

Issue

Vol. 39 No. 1 (2016)

Section

Research articles

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Copyright (c) 2016 Anales del Sistema Sanitario de Navarra

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