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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Am J Ind Med. 2012 May 24;56(1):100–110. doi: 10.1002/ajim.22071

Table IV.

Cronbach’s alpha coefficients: WPFQ forms A and B

Questionnaire and domains Cronbach’s alpha

form A (n=103)		 Number of

items, form A		 Cronbach’s alpha

form B (n=29)		 Number of

items, form B
WPFQ 0.95 130 0.94 114
Demands 0.87 49 0.88 40
Job control 0.88 30 0.82 24
Leadership and social relationships at work 0.95 39 0.94 38
Job rewards 0.69 12 0.71 12