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. 2018 Oct 24;13(10):e0204678. doi: 10.1371/journal.pone.0204678

Table 2. Distribution of scores and factor loadings on the initial 50-item weight literacy scale (note: items 44 and 45 contain multiple questions; each question counted as an item).

Item Responses, % Correct Round 1 Factor Loading Round 2 Factor Loading
1. People can lose weight without exercising.* 65.5% 0.36
2. Drinking water instead of juice can help a person lose weight. 83.0% 0.43 0.45
3. Certain moods can make people want to eat high-calorie foods. 82.5% 0.54 0.61
4. Any physical activity burns calories. 86.0% 0.52 0.62
5. Having friends that are physical active can help a person be more active. 88.5% 0.53 0.47
6. A person can lose weight by eating the same foods, but in smaller portions.* 80.0% 0.41 0.37
7. In equal amounts, fried foods have fewer calories than grilled foods. 73.0% 0.47 0.60
8. Alcoholic beverages have few calories. 72.5% 0.71 0.71
9. Regular meats have fewer calories than lean meats. 58.5% 0.52 0.67
10. The only way to lose weight is eating healthy foods. 49.0% 0.62 0.51
11. Tracking what we eat can help us understand how to cut calories. 86.0% 0.64 0.75
12. People who fast tend to eat more calories.* 48.0% 0.38
13. To keep their weight stable, some people need to eat more calories than other people. 65.0% 0.41 0.52
14. Adults who are trying to lose weight should weigh themselves at least once a week.* 65.5% 0.51 0.25
15. In equal amounts, whole milk has fewer calories than 2% milk.* 65.0% 0.32
16. Some salad dressings and vinaigrettes can add many calories to a salad.* 79.0% 0.66 0.72
17. In equal amounts, mustard has fewer calories than mayonnaise. 52.0% 0.49 0.62
18. A small glass of orange juice has about the same number of calories as an orange.* 33.5% 0.48 0.36
19. The recommended serving size of cheese for a sandwich is a thin slice.* 57.5% 0.56 0.41
20. One tablespoon of most oils has about 120 calories.* 29.0% 0.63 0.26
21. A brisk 20-minute walk can burn the calories from eating a medium order of French fries.* 29.0% 0.59 0.34
22. A packet (1 teaspoon) of sugar has 40 calories.* 13.0% 0.46 0.22
23. A lunch that has 1,500 calories is healthy for most adults. 52.0% 0.41 0.56
24. An overweight adult who does not exercise needs to eat about 500 fewer calories a day to lose one pound per week. 35.5% 0.51 0.54
25. Exercising one time per day for 30 minutes or exercising three times per day for 10 minutes have the same effect for weight loss.* 37.5% 0.30
26. A regular can of non-diet soda has about 10 teaspoons of sugar.* 40.5% 0.42 0.31
27. One teaspoon of sugar has twice the calories of a teaspoon of honey.* 17.5% 0.38
28. A cup of any fruit has about 60 calories.* 14.0% 0.55 0.10
29. The recommended serving size of rice (cooked) is one cup.* 16.0% 0.38
30. A weight loss goal of 1–2 pounds per week is commonly recommended. 68.5% 0.66 0.55
31. A healthy snack should contain at least 300 calories. 39.0% 0.57 0.49
32. 100% fruit juice contains very few calories. 45.5% 0.59 0.61
33. Healthy snacks can have many calories.* 54.0% 0.36
34. A calorie tells us how healthy a food is. 45.5% 0.64 0.62
35. Regular energy drinks contain few calories. 66.5% 0.52 0.59
36. People tend to overeat when there is a lot of food around them. 81.5% 0.69 0.69
37. Setting goals for changing diet and physical activity can help people lose weight. 89.0% 0.66 0.75
38. Eating fried foods less often can help a person lose weight. 66.5% 0.48 0.66
39. Eating smaller portions can help people lose weight. 90.0% 0.71 0.81
40. How many calories a day should an active man eat to have a healthy weight? (An example of an active man is someone who walks briskly for 30 minutes on most days of the week). 57.0% 0.46 0.57
41. How many calories a day should an active woman eat to have a healthy weight? (An example of an active man is someone who walks briskly for 30 minutes on most days of the week). 59.0% 0.53 0.68
42. How many calories a day should an active child aged 5–11 eat to have a healthy weight? (An example of an active child is a girl or boy who plays sports for 60 minutes a day).* 22.0% 0.28
43. How many calories a day should an active child aged 12–18 eat to have a healthy weight? (An example of an active adolescent is someone who plays sports for 60 minutes a day).* 12.5% 0.31
44a. Based on this pizza label, one serving has 380 calories. 68.0% 0.50 0.46
44b. Based on this pizza label, the entire pizza has 3 servings. 66.5% 0.76 0.75
44c. Based on this pizza label, if you ate the whole pizza, you would be eating 760 calories. 56.5% 0.54 0.69
45a. Based on this soda container label, one serving has 150 calories. 77.0% 0.77 0.65
45b. Based on this soda container label, the entire soda has 2 servings. 59.5% 0.80 0.63
45c. Based on this soda container label, if you drank the entire soda bottle, you would be drinking 300 calories. 63.0% 0.79 0.64
46. Exercising one time per day for 30 minutes burns the same number of calories as exercising three times per day for 10 minutes.* 36.0% 0.33

*Item not included in final scale.