Nutrition knowledge and DASH scores
The internal consistency for the overall nutrition knowledge score
was 0.91. It was measured for each domain: advice from the health
experts: 0.56; food groups and food sources: 0.89; food choice: 0.39
and diet–disease relationships; 0.74. Cronbach's alpha ranges from 0 to
1 and a score of ≥0.7 is adequately reliable (Nunnally and Bernstein,
1994). Employees with nutrition related qualifications (n= 11 (1.3%))
had a higher mean nutrition knowledge score (men 78.8 (SD 13.9),