610 Medizin und Gesundheit
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Background:
In recent years, there has been an increasing interest in psychosocial workplace risk assessments in Germany. One of the questionnaires commonly employed for this purpose is the Short Questionnaire for Workplace Analysis (KFZA). Originally, the KFZA was developed and validated for office workers. The aim of the present study was to examine the factorial validity of the KFZA when applied to hospital settings. Therefore, we examined the factorial structure of a questionnaire that contained all the original items plus an extension adding 11 questions specific to hospital workplaces and analyzed both, the original version and the extended version.
Methods:
We analyzed questionnaire data of a total of 1731 physicians and nurses obtained over a 10-year period. Listwise exclusion of data sets was applied to account for variations in questionnaire versions and yielded 1163 questionnaires (1095 for the extended version) remaining for factor analysis. To examine the factor structure, we conducted a principal component factor analysis. The number of factors was determined using the Kaiser criterion and scree-plot methods. Factor interpretation was based on orthogonal Varimax rotation as well as oblique rotation.
Results:
The Kaiser criterion revealed a 7-factor solution for the 26 items of the KFZA, accounting for 62.0% of variance. The seven factors were named: “Social Relationships”, “Job Control”, “Opportunities for Participation and Professional Development”, “Quantitative Work Demands”, “Workplace Environment”, “Variability” and “Qualitative Work Demands”. The factor analysis of the 37 items of the extended version yielded a 9-factor solution. The two additional factors were named “Consequences of Strain” and “Emotional Demands”. Cronbach’s α ranged from 0.63 to 0.87 for these scales.
Conclusions:
Overall, the KFZA turned out to be applicable to hospital workers, and its content-related structure was replicated well with some limitations. However, instead of the 11 factors originally proposed for office workers, a 7-factor solution appeared to be more suitable when employed in hospitals. In particular, the items of the KFZA factor “Completeness of Task” might need adaptation for the use in hospitals. Our study contributes to the assessment of the validity of this popular instrument and should stimulate further psychometric testing.
Die Analyse, basierend auf 200221 Protokollen, zeigt große Dokumentationslücken. Der NAW wurde in 43,9 % und das NEF in 40 % der Notfalleinsätze eingesetzt. Es dauerte 9,3 Minuten um den Patienten zu erreichen, 21,5 Minuten um ihn zu stabilisieren und 14,3 Minuten um den Patienten ins Krankenhaus zu bringen. Die meisten Patienten (57,4 %) waren über 50 Jahre alt, davon bildeten die über 70 jährigen den Schwerpunkt. Jeder 2. Notarzteinsatz (55,6 %), basierend auf der Notarztindikation (> NACA III), hätte ohne einen Notarzt durchgeführt werden müssen. 8,3 % der Patienten konnten nach der Notarztbehandlung zu Hause gelassen werden. Den größten Anteil unter den Notarzteinsätzen machten Erkrankungen gegenüber den Verletzungen aus. Herz- Kreislauf- Erkrankungen stehen an erster Stelle, vor Erkrankungen des ZNS. Die am meisten durchgeführte Maßnahme war der intravenöse Zugang und die Sauerstoffapplikation.