Development and Validity of a Questionnaire on Dyslipidemia Dietary Knowledge

Table 3

The CVI, P, and D of each item of the final DDKQ.

Part	Item	CVI	P	D
Part1: Knowledge of fats	1. Fat mainly exists in the following foods	1.00	0.82	0.33
	2. In dyslipidemia, the preferred meat is	0.93	0.60	0.55
	3. Adult daily calories from fat does not exceed	1.00	0.41	0.28
	4. In dyslipidemia, which of the following types of pork are the best choice	0.96	0.71	0.45
	5. How many grams of meat (meat, poultry) should an adult ingest daily	0.85	0.15	0.21
	6. The adult daily cooking oil volume should not exceed (1 spoon ≈10g)	1.00	0.33	0.29
	7. In dyslipidemia, preferred cooking methods are	0.96	0.82	0.35
	8. Adults should limit their intake of fatty acids	0.89	0.39	0.30
	9. Eating a lot of trans fatty acids will accelerate atherosclerosis and lead to cardiovascular disease. In the following foods, trans fatty acid content is minimal	0.96	0.66	0.46
	10. The saturated fatty acid content of which oil is the highest?	0.78	0.74	0.28
Part 2: Knowledge of cholesterol	11. The food that contains the most cholesterol is	1.00	0.79	0.35
	12. In dyslipidemia, the daily recommended intake of cholesterol is less than	0.96	0.32	0.24
	13. Foods that lower cholesterol are	0.93	0.78	0.36
Part 3: Knowledge of dietary fiber	14. Dietary fiber mainly exists in the following types of food	0.96	0.83	0.32
	15. The dietary fiber content of which of these foods is the highest	0.89	0.43	0.22
	16. Which of these staple foods has the highest fiber content?	0.89	0.46	0.58
	17. Dietary fiber content is minimal in porridge	0.89	0.44	0.44
Part 4: Total energy knowledge	18. Which of the following is not a high-calorie, high-sugar food	0.93	0.77	0.38
	19. The foods that contain the most carbohydrate are	0.96	0.44	0.47
	20. A suitable intake of adult daily staple foods (valley potato and beans) is	0.93	0.36	0.34
	21. The following foods are preferred in dyslipidemia	1.00	0.75	0.46
Part 5: Healthy lifestyle knowledge	22. Three meals a day is a reasonable food intake distribution method	0.93	0.33	0.22
	23. The proper amount of vegetable intake per day is	0.96	0.46	0.40
	24. The appropriate intake of fruit per day for adults is	0.96	0.50	0.23
	25. The recommended intake of salt in adults is less than	0.93	0.51	0.55
Average value		0.94	0.55	0.36

CVI, content validity index, CVI ≥0.78 was considered excellent, otherwise the item was deleted. P, difficulty (of a test item), P ≥ 0.9 or P ≤0.1 were considered too easy or too difficult and were deleted. D, discrimination index (of a test item), < 0.20 denoted an item with low discriminatory power that was deleted [26].