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Psychometric Properties of the Work Ability Index in Health Centre Workers in Spain

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  • Inmaculada Mateo Rodríguez

    (Department of Social and Organizational Psychology, Faculty of Psychology, Universidad a Distancia de Madrid (UNED), 28040 Madrid, Spain
    Escuela Andaluza de Salud Pública, 18011 Granada, Spain
    CIBER de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain)

  • Emily Caitlin Lily Knox

    (Escuela Andaluza de Salud Pública, 18011 Granada, Spain)

  • Coral Oliver Hernández

    (Department of Social, Work and Differential Psychology, Faculty of Psychology, Universidad Complutense de Madrid, 28040 Madrid, Spain)

  • Antonio Daponte Codina

    (Escuela Andaluza de Salud Pública, 18011 Granada, Spain
    CIBER de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain)

  • the esTAR Group

    (Escuela Andaluza de Salud Pública, 18011 Granada, Spain
    esTAR Group Members: Ana Moncada, Antonio Ranchal, Nuria Queraltó, Mercedes Ramblado, Francisca Enriquez, Amalia Ramos, Rebeca Márquez, Antonio Javier Jiménez, Francisco Javier Rodríguez, Silvia Toro, Alberto Fernández, Andrés Cabrera, Pablo Sánchez.)

Abstract

The aim of the present study is to analyse the psychometric properties of the work ability index (WAI) within a sample of Spanish health centre workers. The WAI was translated into Spanish using transcultural and forward–backward translation processes and administered to 1184 Spanish health centre workers. Internal consistency, predictive validity, and discriminative ability were examined. Exploratory factor analysis, via principal components analysis and confirmatory factor analysis, determined the most appropriate questionnaire structure. All indices in relation to predictive validity and reliability were acceptable. Exploratory factor analysis supported validity of the one-factor structure, however, confirmatory factor analysis suggested better properties in relation to a two-factor structure (χ 2 = 59.52; CFI = 0.98; TLI = 0.96; RMSEA = 0.06). Items 3, 4, and 5 loaded onto factor one, and items 1, 2, 6, and 7 loaded onto factor two. The two factors could be broadly described as “subjectively estimated work ability” and “ill-health-related ability”. The WAI is valid and reliable when administered to health centre workers in Spain. In contrast to that suggested by studies conducted in other countries, future research and practical application with similar respondents and settings should proceed using the two-factor structure.

Suggested Citation

  • Inmaculada Mateo Rodríguez & Emily Caitlin Lily Knox & Coral Oliver Hernández & Antonio Daponte Codina & the esTAR Group, 2021. "Psychometric Properties of the Work Ability Index in Health Centre Workers in Spain," IJERPH, MDPI, vol. 18(24), pages 1-10, December.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:24:p:12988-:d:698491
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    References listed on IDEAS

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    1. Harasty, Claire. & Ostermeier, Martin., 2020. "Population ageing alternative measures of dependency and implications for the future of work," ILO Working Papers 995078791102676, International Labour Organization.
    2. Prakash K.C. & Jodi Oakman & Clas-Håkan Nygård & Anna Siukola & Kirsi Lumme-Sandt & Pirjo Nikander & Subas Neupane, 2019. "Intention to Retire in Employees over 50 Years. What is the Role of Work Ability and Work Life Satisfaction?," IJERPH, MDPI, vol. 16(14), pages 1-13, July.
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    Cited by:

    1. Kurashvili Mari & Reinhold Karin & Järvis Marina, 2022. "Work Ability and Psychosocial Factors in Healthcare Settings During COVID-19 Pandemic – Specific Focus on Ageing Workers," Economics and Business, Sciendo, vol. 36(1), pages 164-178, January.
    2. Teeraphun Kaewdok & Saowanee Norkaew & Sanpatchaya Sirisawasd & Nattagorn Choochouy, 2022. "Factors Influencing Work Ability among the Working-Age Population in Singburi Province, Thailand," IJERPH, MDPI, vol. 19(10), pages 1-10, May.

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