Table 3.

Descriptive statistics and internal consistency of the scales of the KFZA (orthogonal solution)

Scales	Eigenvalues	M	SD	Cronbach’s α	Number of items
Social Relationships	3.10	3.53	0.46	0.80	6
Job Control	2.72	3.17	0.24	0.80	4
Opportunities for Participation and Professional Development	2.69	2.84	0.57	0.76	4
Quantitative Work Demands	2.28	2.34	0.19	0.76	3
Workplace Environment	1.87	2.92	0.29	0.65	3
Variability	1.87	3.63	0.22	0.68	4
Qualitative Work Demands	1.59	3.62	0.17	0.63	2

Abbreviations: KFZA Kurzfragebogen zur Arbeitsanalyse (Short Questionnaire for Workplace Analysis)