Reliability and validity assessments for Najmie job satisfaction questionnaire

This study was done to assess the validity and reliability of Najmie Job Satisfaction Questionnaire (NJSQ) in order to provide a suitable tool for measuring job satisfaction (JS). In this cross-sectional study, 212 staff members at Najime Subspecialty Hospital were selected by stratified sampling method. The participants took NJSQ. After evaluating content validity, confirmatory and explanatory factor analysis and Cronbach's Alpha were used to examine construct validity and reliability of the questionnaire, respectively. SPSS software version 16 was used to analyze the data. The samples, 212 subjects, consisted of 181 (86.6%) women and 28 (13.4%) men. The explanatory factor analysis showed 4 factors with 54% total variance and 0.82% Kaser-Meyer-Olkin index. These factors were also verified by confirmatory factor analysis (P=0.368). In addition, the reliability of the questionnaire was reported to be 0.88% based on Cronbach's alpha method. Since validity and reliability indexes were reported suitable, NJSQ can be considered a valid and reliable questionnaire for measuring JS.