Positive items Discrimination index–DI (r Spearman) P-value
1. Consumers have little interest in checking the ingredients on labels due to the reduced font size. 0.66 <0.0001*
2. Consumers usually do not read the ingredients of the composition on the product label. 0.50 <0.0001*
3. There is a need for development of soy products that taste better. 0.45 <0.0001*
4. There is much difference between soy-based and traditional fruit juice. 0.56 <0.0001*
5. Soy products cannot be purchased for causing flatulence. 0.32 0.002*
7. Soy helps the intestines to work well. 0.42 <0.0001*
8. Soy is a good source of protein. 0.51 <0.0001*
9. The consumption of soy by women helps relieve the symptoms of menopause. 0.34 0.0009*
11. The reduced consumption of soy and soy products happens due to little promotion of their benefits. 0.47 <0.0001*
14. The soy "milk" is healthier than cow's milk because it contains no hormones. 0.17 0.1021ns
16. Soy consumption helps to strengthen bones. 0.33 0.0018*
17. For those allergic to cow's milk, the soy "milk" is a healthy option 0.54 <0.0001*
Negative items Discrimination index–DI (r Spearman) P-value
6. The information on products label are clear enough about soy 0.14 0.188*
10. We should avoid the consumption of transgenic soy-based food. 0.05 0.6118ns
12. Soybean oil is produced from transgenic soybeans. 0.18 0.087*
13. Soy is a better source of protein than meat from animals (beef, chicken, fish ...). (0.05) 0.6351ns
15. Transgenic soy is bad for health 0.17 0.1172*
CI- confidence interval (p=0.05) ns – no significance
* significant
Table 2: Discrimination power of the items of the attitude scale in relation to soybean and its derivatives