Validation of the Chinese version of the Quality of Nursing Work Life scale

PLoS One. 2015 May 7;10(5):e0121150. doi: 10.1371/journal.pone.0121150. eCollection 2015.

Abstract

Quality of Nursing Work Life (QNWL) serves as a predictor of a nurse's intent to leave and hospital nurse turnover. However, QNWL measurement tools that have been validated for use in China are lacking. The present study evaluated the construct validity of the QNWL scale in China. A cross-sectional study was conducted conveniently from June 2012 to January 2013 at five hospitals in Guangzhou, which employ 1938 nurses. The participants were asked to complete the QNWL scale and the World Health Organization Quality of Life abbreviated version (WHOQOL-BREF). A total of 1922 nurses provided the final data used for analyses. Sixty-five nurses from the first investigated division were re-measured two weeks later to assess the test-retest reliability of the scale. The internal consistency reliability of the QNWL scale was assessed using Cronbach's α. Test-retest reliability was assessed using the intra-class correlation coefficient (ICC). Criterion-relation validity was assessed using the correlation of the total scores of the QNWL and the WHOQOL-BREF. Construct validity was assessed with the following indices: χ2 statistics and degrees of freedom; relative mean square error of approximation (RMSEA); the Akaike information criterion (AIC); the consistent Akaike information criterion (CAIC); the goodness-of-fit index (GFI); the adjusted goodness of fit index; and the comparative fit index (CFI). The findings demonstrated high internal consistency (Cronbach's α = 0.912) and test-retest reliability (interclass correlation coefficient = 0.74) for the QNWL scale. The chi-square test (χ2 = 13879.60, df [degree of freedom] = 813 P = 0.0001) was significant. The RMSEA value was 0.091, and AIC = 1806.00, CAIC = 7730.69, CFI = 0.93, and GFI = 0.74. The correlation coefficient between the QNWL total scores and the WHOQOL-BREF total scores was 0.605 (p<0.01). The QNWL scale was reliable and valid in Chinese-speaking nurses and could be used as a clinical and research instrument for measuring work-related factors among nurses in China.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • China
  • Cross-Sectional Studies
  • Female
  • Humans
  • Male
  • Middle Aged
  • Nursing Staff / psychology*
  • Psychometrics / standards*
  • Quality of Life
  • Reproducibility of Results
  • Surveys and Questionnaires / standards*
  • Translating
  • Young Adult

Grants and funding

The study was supported by Guangdong Provincial Scientific Planning Project (No. 2010B031900031) and the National Clinical Key Specialty Construction Preparatory Projects. The work by Wang was also supported, in part, by the Robert Wood Johnson Foundation Nurse Faculty Scholars Program. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.