Validation of the Croatian Version of Work Ability Index (WAI) in Population of Nurses on Transformed Item-Specific Scores

Abstract

AimTo assess the psychometric properties of the Croatian version of a Work Ability Index Questionnaire (WAIQ-CRO) in the population of nurses by using a specific methodological approach.MethodsA cross-sectional survey was conducted in a sample of 711 Croatian nurses in 2018 in Zagreb, Croatia. The instrument’s internal consistency was assessed by using Cronbach’s alpha coefficient (α). The factor structure was verified by confirmatory (CFA) and exploratory factor analysis (EFA), with the assumption of a single-factor structure. To ensure the equality of importance of items in the assessment, the item-specific scores were transformed.ResultsThe internal consistency of the instrument was satisfactory (α=0.71). CFA showed poor first model (Model-1) compatibility data (p<0.001, CFI=0.85, GFI=0.93, RMSEA=0.13). The modificated indexes suggested the introduction of correlation parameters residual variances of results from WAIQ-CRO Item-1 and Item-2. After introducing these covariances, the index model assentation (Model-2) showed desirable assentation measures (p<0.001, CFI=0.95, GFI=0.97, RMSEA=0.08). Comparison showed better compatibility of Model-2 (p<0.001). The implementation of EFA has identified three factors. Replication of this model in CFA resulted in relatively good model assentation approaches with data (p<0.001, CFI=0.96, GFI=0.98, RMSEA=0.07). Comparison of this model (Model-3) with Model-2 showed a significantly better compatibility of Model-3 (p<0.001).ConclusionThe WAIQ-CRO proved to be a reliable and valid instrument which can be used in research among Croatian nurses. The results suggest that it would be better to consider a three-factor structure than a single-factor structure, as a three-factor structure can direct decision-makers to which segment to locate interventions.

Impact of sense of coherence on work ability: A cross-sectional study among Croatian nurses

“…Detailed description of the instrument and scoring is provided elsewhere ( 3 ). In our study the Croatian version of a WAIQ (WAIQ-CRO) was used, which demonstrated satisfactory internal consistency (Cronbach’s α=0.71) and a three-factor structure ( 20 ).…”

Draft Methodology of the Age Management Implementation in Human Resource Management in a Transport Company

“…The values obtained using the WAI method were compared with the reference value of foreign studies; e.g., (Ilmarinen et al 1997;Ilmarinen 2009;Karazman et al 1999;Smrekar et al 2019), which represent the average value of work ability for categories of men and women of the same age and performing the identical type of work. As mentioned, the work ability resulting value was measured at a value of 42.8 rendering that the examined company disposes of relatively good work ability needed to be maintained.…”

“…After this phase, another crossroad in the workflow emerges-a personal development and risk of unemployment together with the round-the-clock care and support of the family. The final stage is usually characterized by oncoming retirement from the labor market, which may be caused either by company's strategy, or worker's individual plan (Kröll et al 2017;Smrekar et al 2019;Verheyen et al 2016).…”