Table 3.

Factor loadings and α if item deleted for each item in knowledge domain after deletion of item 16 and 18

Items	Factor Loading	Cronbach’s α if item deleted
1. A balanced meal plan is a plan in which appropriate amounts of each food group is used.	0.325	0.737
2. Which of the following foods is not included in dairy food group?	0.323	0.736
3. Which of the following options is equal to one serving of grains food group?	0.345	0.735
4. Which of the following nutrients are mainly provided by meat group?	0.298	0.738
5. During pregnancy, how does daily requirement of meat (white and red meat) consumption change?	0.263	0.739
6. Legumes are not the good sources of proteins.	0.345	0.735
7. Which of the following foods are good sources of Calcium?	0.203	0.741
8. Which of the following nutrients do provide energy to our body?	0.542	0.724
9. Red meat, poultry and eggs are good sources of …….	0.399	0.734
10. Trans fatty acids are fatty acids which ……	0.546	0.723
11.Which of the followings is the best time to add iodized salt to food?	0.327	0.737
12. Obesity and being overweight during young age is not associated with diabetes in older ages.	0.462	0.728
13. Osteoporosis occurs as people grow older and cannot be prevented.	0.372	0.736
14. If you don’t have enough money to buy meat, which of following foods will be a more appropriate alternative?	0.271	0.739
15. Which of the following cuts of meat has more fat?	0.309	0.737
17. Red raw meat can be kept in the fridge for one week.	0.300	0.738
19. In which of the following cooking methods, nutritional values of vegetables are better maintained?	0.460	0.729
20. Production of 1 kilogram wheat requires more water than production of 1 kilogram of red meat (beef).	0.264	0.738
21. The difference between pasteurized and sterilized milks is in heating method and the temperature used.	0.300	0.738
22. Consumption of animal foods harms the environment less than plant foods.	0.397	0.733
23. Using food products which are produced locally can help environmental sustainability.	0.224	0.741
24. Global warming could affect people’s access to adequate and healthy foods.	0.500	0.727
25. Production of plant foods compared with animal foods results in equal amount of greenhouse gas emission.	0.407	0.732
26. Imagine you enter a supermarket to choose a healthy snack, which of the following snacks is the healthiest choice?	0.389	0.733
27. If you are asked to choose the healthiest among the followings to prepare a food, which one will you select?	0.355	0.736
28.Body mass index (BMI) of a person who weighs 64 Kg and is 170 cm tall equals to:	0.314	0.738
29. An adult person has a BMI of 27; How do you evaluate his weight status? He/she is	0.425	0.733

Kaiser-Meyer-Olkin (KMO) was 0.728. P value for Bartlett’s Test of Sphericity was <0.001 (χ²=1011.33, Degree of freedom=351)