@article{ref1,
title="Development of a Vitality Scan related to workers' sustainable employability: a study assessing its internal consistency and construct validity",
journal="BMC public health",
year="2015",
author="Brouwers, Livia A. M. and Engels, Josephine A. and Heerkens, Yvonne F. and van der Beek, Allard J.",
volume="15",
number="",
pages="e551-e551",
abstract="BACKGROUND: Most validated sustainable employability questionnaires are extensive and difficult to obtain. Our objective was to develop a usable and valid tool, a Vitality Scan, to determine possible signs of stagnation in one's functioning related to sustainable employability and to establish the instrument's internal consistency and construct validity. <br><br>METHODS: A literature review was performed and expert input was obtained to develop an online survey of 31 items. A sample of 1722 Dutch employees was recruited. Internal consistency was assessed by Cronbach's alpha. The underlying theoretical concepts were extracted by factor analysis using a principal component method. For construct validity, a priori hypotheses were defined for expected differences between known subgroups: 1) older workers would report more stagnation than younger workers, and 2) less educated workers would report more problems than the highly educated ones. Both hypotheses were statistically tested using ANOVA. <br><br>RESULTS: Internal consistency measures and factor analysis resulted in five subscales with acceptable to good reliability (Cronbach's alpha 0.72-0.87). These subscales included: balance and competence, motivation and involvement, resilience, mental and physical health, and social support at work. Three items were removed following these analyses. In accordance with our a priori hypothesis 1, the ANOVA showed that older workers reported the most problems, while younger workers reported the least problems. However, hypothesis 2 was not confirmed: no significant differences were found for education level. <br><br>CONCLUSIONS: The developed Vitality Scan - with the 28 remaining items - showed good measurement properties. It is applicable as a user-friendly, evaluative instrument for worker's sustainable employability. The scan's value for determining whether or not the employee is at risk for a decrease in functioning during present and future work, should be further tested.<p /> <p>Language: en</p>",
language="en",
issn="1471-2458",
doi="10.1186/s12889-015-1894-z",
url="http://dx.doi.org/10.1186/s12889-015-1894-z"
}