OBJECTIVE: The aim of this study was to determine the reliability and construct validity of the three dimensions of the Job Content Questionnaire (JCQ): demand, control and job support among hospital nursing staff. METHODS: The minimun reduced version of the JCQ was used, which include three dimensions: psychological demands (9 items), job control (9 items) and job support (11 items). Validity was assessed in a random sample of 330 nursing staff from two general hospitals in the province of Alicante (Spain). The reliability of the questionnaire was evaluated after re-interviewing a subsample of 50 nurses 15 days after the first interview. Construct validity was evaluated by calculating correlations between the three dimensions of the JCQ obtained after factorial analysis with the burnout scale and six dimensions of the 36-item short-form health survey (SF-36) questionnaire. RESULTS: Factorial analysis revealed that the version of the JCQ validated in this study had the same factorial structure as the original questionnaire. The intraclass correlation between the first and second interview was high for each of the three dimensions (between 0.83 and 0.87). Cronbach's alpha was also high (between 0.74 and 0.88). A moderate but significant correlation was found between the three JCQ dimensions and the burnout scale: (-0,27 for job support, 0.31 for psychological demands and -0.12 for job control). A moderate correlation was also found for some SF-36 dimensions. CONCLUSION: The factorial structure of the JCQ was similar to that proposed by the author in the context of Spanish culture. The reliability and internal consistency of each of the three dimensions was high while construct validity was moderate.
OBJECTIVE: The aim of this study was to determine the reliability and construct validity of the three dimensions of the Job Content Questionnaire (JCQ): demand, control and job support among hospital nursing staff. METHODS: The minimun reduced version of the JCQ was used, which include three dimensions: psychological demands (9 items), job control (9 items) and job support (11 items). Validity was assessed in a random sample of 330 nursing staff from two general hospitals in the province of Alicante (Spain). The reliability of the questionnaire was evaluated after re-interviewing a subsample of 50 nurses 15 days after the first interview. Construct validity was evaluated by calculating correlations between the three dimensions of the JCQ obtained after factorial analysis with the burnout scale and six dimensions of the 36-item short-form health survey (SF-36) questionnaire. RESULTS: Factorial analysis revealed that the version of the JCQ validated in this study had the same factorial structure as the original questionnaire. The intraclass correlation between the first and second interview was high for each of the three dimensions (between 0.83 and 0.87). Cronbach's alpha was also high (between 0.74 and 0.88). A moderate but significant correlation was found between the three JCQ dimensions and the burnout scale: (-0,27 for job support, 0.31 for psychological demands and -0.12 for job control). A moderate correlation was also found for some SF-36 dimensions. CONCLUSION: The factorial structure of the JCQ was similar to that proposed by the author in the context of Spanish culture. The reliability and internal consistency of each of the three dimensions was high while construct validity was moderate.
Authors: Jesús Martín Fernández; Tomás Gómez Gascón; Carlos Martínez García-Olalla; María Isabel del Cura González; María Carmen Cabezas Peña; Salvador García Sánchez Journal: Aten Primaria Date: 2008-07 Impact factor: 1.137
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