| Domains | Item | Factor 1 | Factor 2 | Factor 3 |
| Adherence efficacy | 1—I follow-up of my diet (weight loss or weight gain up). | .550 | | |
| 3—I can follow my age-related diet when I’m in a hurry or busy. | .432 | | |
| 11—I prepare appropriate foods for my diet when I eat alone. | .554 | | |
| 12—I refuse to eat foods that interaction with my drugs. | .633 | | |
| 17—I drink enough amount of water daily according to my physical condition. | .524 | | |
| 18—I eat/prepare foods that are rich in calcium and vitamin D according to my physical conditions and needs. | .476 | | |
| 20—I adjust my diet according to my digestive problems (e.g., heartburn,dyspepsia, diarrhea, bloating, and anorexia) | .570 | | |
| 21—I adjust my diet according to my dental and oral problems (e.g., dry mouth, taste and/or olfaction system defects, and toothless and tooth defects) | .444 | | |
| 22- I can prepare different foods as well as following my own diet. | .408 | | |
| 26- I can avoid nutrients that increase my blood pressure. | .486 | | |
| 4- I adhere to my age-appropriate diet, when I eat at a restaurant. | .595 | | |
| 5- I follow my age-related diet when I’m eating at parties. | .458 | | |
| 9- I keep my weight steady whenever I got to my ideal body weight. | .432 | | |
| 25- I adhere to dietitians’ advice about healthy diet. | .523 | | |
| Preventive behaviors | 2—I adjust the fat in my diet. | | .507 | |
| 7—I ignore eating unhealthy or junk foods (e.g., fast foods, potato chips, and puff ) | | .448 | |
| 8—I can vegetables and foods rich in fibers according to my physical conditions. | | .423 | |
| 14—I can adjust the amount of sugar and sweets in my diet based on my physical conditions. | | .517 | |
| 15—I say no to the unhealthy food my family has prepared for me. | | .490 | |
| 16—I adjust the amount of salt in my meals. | | .449 | |
| 19—I schedule my meals in a way that none of them would be eliminated. | | .531 | |
| 23—I have enough motivation to buy and prepare healthy foods, even when I’m alone. | | .600 | |
| 27—I buy and eat dairy products (e.g., milk, yogurt, and cheese) based on the level of fat they contain. | | .545 | |
| 28—I pay attention to the nutritional values (e.g. fat, Calories and minerals) when I want to buy foodstuff. | | .414 | |
| Information effectiveness | 6—I know what nutrients a healthy diet is made up of. | | | .606 |
| 10—I know how to cook foods so their nutritional value would not decrease. | | | .469 |
| 13—I can recognize healthy foods when buying them. | | | .409 |
| 24—I receive healthy nutrition information from the dietitian. | | | .709 |
| 29—I check the accuracy of the nutritional facts presented by friends, family members or media with the nutrition experts. | | | .443 |
