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Table 4 Psychometric Properties of Constructs.

From: Factors influencing consumer dietary health preventative behaviours

Construct Items Mean SD Reliability diagnosis AVE
A. Health behaviours      
Positive diet action 3 3.6 0.7 0.6 0.34
Negative diet action 3 3.4 0.7 0.5 0.25
Alcohol moderation 1 3.6 1.2 ... ...
Label information acquisition 1 3.9 1.1 ... ...
B. Health motivation      
Proactive action 2 3.7 0.7 0.78 0.65
Passive behaviour * 4 2.5 0.7 0.71 0.39
C. Health ability characteristics      
Nutrition knowledge scale 6 ... ... ... ...
Self-reported nutrition knowledge 1 3.4 0.9   
Education 1 12.5 2.7 ... ...
Age 1 43.4 15.1 ... ...
Income (sterling pounds) 1 77.6 68.3 ... ...
D. Perceived threat of disease 5 7.6 5.2 0.82 0.49
E. Efficacy 3 4.1 0.6 0.86 0.68
  1. NOTE: The composite or construct reliability is evaluated based on Cronbach's alpha for continuous variables: (∑λ i )2/(∑λ i )2 + (∑v [δ i ]). The convergent validity is evaluated using the average variance extracted: AVE = (∑λ i 2)/(∑λ i 2) + (∑v [δ i ]); where λ i = completely standardised factor loading for item i; ∑v [δ i ] = completely standardised error variance for item i.
  2. *) Passive behaviour: the scale values were reversed so that high scores reflect high levels of health motivation.
  3. Source: own calculations