Dimensional structure of the demand control support questionnaire: a Brazilian context

摘要: According to Karasek, job strain results from an interaction between high demands and low decision latitude. To reassess the dimensional structure evaluate internal consistency of demand control support questionnaire (DCSQ), a shortened version content that was not sufficiently evaluated in validation studies. The study investigated 825 workers who completed DCSQ Rio de Janeiro, Brazil; 399 workers, self-administered at hospital (2004–2005), 426 were interviewed nine restaurants (2006–2007). Confirmatory factor analysis using structural equation models used test theoretical dimensionality. Internal by composite reliability convergent validity average variance extracted. supported instrument three dimensions: demands, skill discretion authority. best fit model achieved removing social work item repetitive (skill discretion). A cross-loading learning new things on error measurement correlation fast intense confirmed. Composite acceptable for all dimensions, except (0.58), which also showed inadequate extracted (0.32). This final confirmed separate analyses according setting, but loadings lower restaurant workers. Our indicated authority formed two distinct dimensions. Additionally, should be removed, as well one items or (demands). Future research is still required confirm these findings.