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Table 2 Mean, standard deviation (SD), item-total correlation and Cronbach’s alpha coefficients of the scales of the DCSQ

From: Validating the Demand Control Support Questionnaire among white-collar employees in Switzerland and the United States

Items

Switzerland

United States

Mean (SD)

Item-total correlations

Alpha of scale

Mean (SD)

Item-total correlations

Alpha of scale

Psychological demands (scale range: 5-20)

12.59 (2.44)

 

0.72

13.27 (2.43)

 

0.78

 Item 1: work fast

 

0.59

  

0.58

 

 Item 2: work intensively

 

0.50

  

0.57

 

 Item 3: work effort

 

0.48

  

0.54

 

 Item 4: overtime work

 

0.51

  

0.55

 

 Item 5: conflicting demands

 

0.33

  

0.54

 

Decision latitude (scale range: 6-24)

16.60 (3.00)

 

0.77

17.31 (2.84)

 

0.78

 Item 6: learning new things

 

0.45

  

0.54

 

 Item 7: skill level

 

0.48

  

0.38

 

 Item 8: being creative

 

0.64

  

0.62

 

 Item 9: variety of work

 

0.45

  

0.49

 

 Item 10: how to do the work

 

0.57

  

0.60

 

 Item 11: what to do at work

 

0.50

  

0.57

 

Social support at work (scale range: 6-24)

18.88 (2.82)

 

0.83

18.34 (2.68)

 

0.84

 Item 12: pleasant atmosphere

 

0.62

  

0.52

 

 Item 13: spirit of unity

 

0.68

  

0.73

 

 Item 14: colleagues support

 

0.69

  

0.69

 

 Item 15: helpful colleagues

 

0.53

  

0.52

 

 Item 16: relationship with superiors

 

0.49

  

0.65

 

 Item 17: relationship with colleagues

 

0.66

  

0.59