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Psychometric properties of the Nurses Work Functioning Questionnaire (NWFQ).
Fania R Gärtner1, Karen Nieuwenhuijsen, Frank J H van Dijk
1Coronel Institute of Occupational Health, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. F.R.Gartner@amc.uva.nl
Plos One
|November 17, 2011
Summary
The Nurses Work Functioning Questionnaire (NWFQ) shows good reliability and validity for most subscales in assessing work impairment in healthcare professionals. Further refinement is needed for the "impaired decision making" subscale.
Area of Science:
- Occupational Health
- Psychometrics
- Nursing Research
Background:
- The Nurses Work Functioning Questionnaire (NWFQ) is designed to measure work functioning impairments in nurses and allied health professionals.
- It comprises seven subscales targeting common mental disorders affecting work capacity.
Purpose of the Study:
- To evaluate the psychometric properties of the NWFQ.
- Assessing the questionnaire's reproducibility and construct validity is key.
Main Methods:
- The NWFQ was administered to 314 nurses and allied health professionals, with 112 undergoing re-testing.
- Reproducibility was measured using intraclass correlation coefficients (ICC) and standard error of measurement (SEM).
- Construct validity was assessed via convergent (Endicott Work Productivity Scale - EWPS) and divergent (physical functioning scale) correlations, alongside discriminative validity using Mann Whitney U tests.
Main Results:
- Most subscales demonstrated good reliability (ICC: 0.72-0.86) and convergent validity (correlations 0.38-0.62).
- Divergent validity was consistently good (correlations -0.06 to -0.23).
- Discriminative validity was also strong, showing significant differences between groups with and without mental health complaints (p<0.001-p=0.003).
Conclusions:
- The NWFQ exhibits favorable psychometric properties for six of its seven subscales.
- The
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